In keeping with my recent wedding-borne inquiry into default notions of romantic future, the arc of the story, and also owing to the fact that I finished my most recent book conquest -- the inestimable Mountains Beyond Mountains (we're helping out PIH w/their drupals at chapter3) -- I've been considering the possibilities.
Fact: to the best of my knowledge all but a recent few of my significant romantic interests (the "old flame" category) are now married, engaged to be married, or have been married. Some of them even have children. This would seem to suggest that the kinds of girls I've been into over the years are the marrying kind. Also it would seem to suggest that my future more likely than not lies in undiscovered country.
Counter-Fact: I haven't been in any relationships lasting a year or more, and have never lived with a lover. Also, to put it diplomatically, I don't have a strong track record of fidelity.
Fact: I really really like kids. I've always loved children, was a babysitter as a young man, and I've gotten into arguments with people who suggest that it's morally questionable to bring new ones into the world (as opposed to say adopting). I seem to have a pretty strong desire to pass on my DNA.
Counter-Fact: the particular circumstances of my life (massive work, lack of steady location, etc) are not conducive to settling down. I've also shown a particular affinity for rambling, as well as a resistance to compromising personal goals or priorities for the sake of others.