How many people have noticed Jesus was against all sexual activities?

Mat 19:11-12 But he said unto them, All men cannot receive this saying, save they to whom it is given. (12) For there are some eunuchs, which were so born from their mother's womb: and there are some eunuchs, which were made eunuchs of men: and there be eunuchs, which have made themselves eunuchs for the kingdom of heaven's sake. He that is able to receive it, let him receive it.

Eunuch = 1. A castrated man

Mat 5:28-30 But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart. (29) And if thy right eye offend thee, pluck it out, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell. (30) And if thy right hand offend thee, cut it off, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell.

For those right handed it means no masturbation....

Luk 20:34-35 And Jesus answering said unto them, The children of this world marry, and are given in marriage: (35) But they which shall be accounted worthy to obtain that world, and the resurrection from the dead, neither marry, nor are given in marriage:

No marriage either?

Y'know, I think yer taking it exactly the 180 degree from what he intended. All the prophets had a definite streak of dramatic irony or even outright sarcasm, and Jesus was no exception. The purpose, was to drive the point home clearly to those who were paying attention.

It should be obvious that chopping off a large, important part of the body like an eye, hand or foot is not going to improve yer attitude, nor will it make you lust any less. Therefore it can't be true that he was suggesting removing a body part to remove lust; and getting rid of passions is not a big item on his agenda. Quite the opposite.

Matthew 10:34 Do not think that I come to send peace on Earth: I came
not to send peace, but a sword.
Luke 12:49 I have come to send fire on the Earth; and how I am distressed
till it becomes kindled;

You quote hacking off an eye and a hand; he also said cutting off a foot and throwing it away:

Mark 9:45 And if your foot offends you, cut it off; it is better for you
to enter lame into life, than having two feet to be cast into
hell, into the fire that never will be quenched,
Mark 9:46 Where their worm does not die, and the fire is not quenched.

His point was in a riddle in a wordplay on a body part he mentioned, that he would like to get rid of. It was well known, and still is, that the Latin term for 'foot' is 'tarsus'. The tarsus he referred to, was going to be the epistles by a certain Paul of Tarsus, who praised Jesus as God but contradicted everything Jesus taught. The rant about cutting off body parts was to get our attention, because tearing out the epistles could be, in fact, done literally after the 4th century. And, a lot of prophecy, most of it actually, centers around the day of wrath, which is mentioned frequently as associated with events of the passover, as during the exodus from Egypt; and passover ('Pesach') also means 'lame'. (Look it up!)

Jesus certainly did want to amputate a 'Tarsus' from any association with his teachings. I once tried to make a list of things that Jesus and Paul agreed upon, and things that they disagreed upon. The first list remained blank; the second list, to date, has 81 items. He is definitely the 'anti-Jesus'. He made many more remarks that make absolutely no sense, unless applied against Paul of Tarsus; that is what a 'riddle' is. Just try replacing 'foot' or 'feet' with 'Tarsus', and you will see what I mean; as in John 13, he washes the feet but says there is a 'tarsus' that has been washed but remains unclean; the heel is one of the seven bones of the tarsus, and he says the tarsus of the person with whom he shared bread, is raised against him. There are many, many more. Just try making your own pair of lists, and see which one fills up quickly, and which one stays empty! (And. look around at other prophetic passages, such as Revelation 13 where one of the seven heads of the beast received a fatal wound from which it miraculously recovered; and compare with Acts 9 where Paul (Saul) of Tarsus received a bolt from the blue in the head, blinding him; stuff like that is usually fatal; and his blindness was miraculously healed in the house of Judas, and he got a lot of attention and, eventually, one of the biggest followings in the western world. Or, Genesis 3, where the serpent attacks with a bite to the tarsus, and its head, once again, is wounded. The list of correspondences goes on and on throughout prophecy.
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The one who frequently spoke out against passion and sex was Paul of Tarsus. Voluntary chastity was like being a eunuch; and Jesus was hinting that his enemy Paul was trying to make his followers eunuchs. If you have read the first chapter of Genesis, that goes against the first commandment to all life - "go forth and multiply"; you don't do that as a eunuch. AND the name 'Paul' was from the Babylonian nickname (PWL, which means 'beans') of Tiglath Piliser IV, who was in the habit of castrating the rulers of all the lands he conquered in the 8th century BCE, to eliminate dynasties that might be hard to control in conquered territory.
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In Luke 20:34-35, just because you are not married, does not mean you must not have sex (as in, 'go forth and multiply', if you are to obey the Law). Marriage was because of property concerns and inheritance and children to help with farm work, which is not an issue when you deal with the Creator; he can surely take care of those concerns for us, if he can create trillions of galaxies. Why would anyone want to make an eternal contract with someone they might get tired of after a few hundred centuries, if marriage was necessary for having sex?

Yep. No marriage. Just sex.