Ok, that is all fair enough....I had an inkling that was what had happened (judging by what happened with the "genetics" threads that got out of hand).
I believe that boundaries sometimes need to be lowered or bent, but possibly this is still not the time to be doing that, if people are still offended by these issues.
However I also want to make the point that it was probably the minority that spoilt it for the majority (as is life), and that it's probably the people that go too far that need to think about themselves and their views, rather than the people who want to discuss these issues.
As with all the issues in the game (like "making babies" - which is blatantly addressed within the game in a non-adult fashion), the issue of lifestyle choice may be able to be integrated into the game as a way of teaching younger players about these things.
If you took away the baby making aspect, and left it as two people living together who could adopt a child at will, the game would be the same as it is now.
Like I've already said, this may not be the time and it might only be in the future when these things can be talked about freely, but it is something to think about, and an issue that won't go away.
Sometimes suppressing things isn't always the best way to deal with them, although I know why it is absolutely necessary in a forum such as this.