it's just too much work, for not enough payoff, and i'm also too picky about my mates. i found that the women i attracted really didn't add much into my life, nor did the actual companionship. i found it to be much like a 2nd job to maintain a relationship and the expectations that go along with it. i already have a job, i don't need a second one. maybe that's my problem, but it is what it is.
i plan on retiring somewhere cheap and warm in my 40s or early 50s and not really bothering with mortgage or family or anything.
personally i think a lot of guys are like this, they just don't talk about it because the social expectation of career/family/mortgage is too strong.