I get girls to buy me drinks because no good dead goes unpunished. IF you do too much for a girl and ask for nothing in return they may start to see you as a wimp, chump, and a loser provider. What happens if you are the guy who women want, what happens if you are chased and you are the prize. I think of myself as the prize in every interaction and you should too. Imagine if Jay-Z walked into the room how would the girl act? Do you want them treating you like Jay-Z or like a bum on the street begging for money.