Great answers -- (I'm almost just making my mark here, under "my posts", so I can find it all later on, when I might really need it)
Most come here only to play, knowing it's nearly free once you're in-country, and that Latina heat in all its varieties is intoxicating. Others want to try for different stakes, romance (that Latina thing again) or relationship (hmmmmm). Some

want it all.
Money is a natural part of it; it is just more hidden in our culture (until you write the big check to the ex and her lawyer). European men (and plenty of other cultures) have had mistresses (not the kind with whips either) for millennia -- we're just new to the game -- in this case, it's complicated by distance and language (substituting for class divisions in Europe). But we're lucky to get to "buy in" to the great chica game so cheaply. A chance to learn it that we could NEVER get so clearly at home.
I'm not a poker player, but it occurred to me yesterday that a lot of this is like that game. You have to ante up to be dealt a hand, and you have to call some bets to see the other players' cards. And to know when a chica is bluffing? Well, you gotta learn to read her tells. And when she folds, well, you get all the chips (for that hour, at least

)