Well, I am pursuing a Hollywood career, so my current long term relationship prospects are pretty much nil and I am very honest about that with anyone I date (it has already led to one break up).
I do run into a lot into women that don't want to have kids now, but would like to have one or two (or more) some time down the line. I don't think I've ever met a woman that has flat out said she does not want children. Those are treacherous waters to navigate.
But it is really becoming an issue, especially as I get older, and I feel like the fear of parenthood is forcing me to alienate myself from the opposite sex. I cannot even imagine I would have refused to go out with someone out of fear of possible sexual relations in my early-twenties, but that is most definitely the case now.
It is really bothering me, though. It sucks, because I am a very social creature and I like interacting with the opposite sex, but now I feel I need to withdrawal before it leads to something.
Even if I use protection, my mind runs wild with doubts about condoms breaking, failure in birth control, etc. It doesn't help that I am actually the product of an unplanned pregnancy - and both my parents used protection. Anytime I think that the pill and condoms are foolproof, I just look in the mirror.