Yes, yes I do. As many as possible, as many times as possible!!!! The more kids I have the more occupations they can have to save me. i.e. Cop to get me off, Judge to save me, Dr. to keep the ole prostate healthy...... LOL
I get girls pregnant in games every chance I get. If my MC fucks a girl's ass or mouth I always make sure he fucks her vagina last so that he can at least try to get her pregnant.
Almost never, unless its in the context of a long-term relationship (which in this kind of game "never" happens). I usually project into the MC, and therefore try to keep the same values in the game I have in RL, event though the setting may be unrealistic.