I agree that many people have an inappropriate attitude towards sex. And I am not saying that castration is even a solution in the first place - as the other commenter pointed out, that wouldn't really fix the psychological issues that we're trying to solve. Keeping one person or several people sane and agreeable in a tightly confined chamber for months or years is a hard problem, and not just because of the biological life support systems.

But I was proposing this drastic action as an example of the drastic solutions and risks we could take for these missions. I was not proposing it just to deal with the "problem of sex", I am saying that we can consider crazy actions so we can FREAKING COLONIZE ANOTHER PLANET.

And yes, I see the irony in starting a colonization operation with castrated astronauts. Obviously, it would be a while before the colony was self-supporting for air, water, and food, much less self-populating.