How generous are you with money?

Are you easy to pull your wallet or purse for a friend who needs a few bucks? How much money are you willing to lend before you stop and think you are being taken advantage of?

What are your personal rules in lending money? Do you lend a large amount only to feel bad or combative when someone does not pay in time or knowing that you might wait awhile you simply choose to lend a smaller amount or not at all? Or do you just give out an amount that to you would be ok if never returned since you hate asking back for it?