[sammyg2]

If you "give" someone money, you should expect or recieve nothing in return.
if you LOAN someone money you should expect to get back the exact amount you loaned, and if they decide to give you back some interest that's gravy.
in no way should anyone feel entitled to anything beyond that.

If you give someone money and they win something with it, you are not entitled to the winnings and should not expect to get any of it.

Suppose you "gave" someone some money and they went out and tried to buy illegal drugs with it, and you had absolutely no knowledge of their act or intention.
Should you be arrested for it?

If that doesn't seen right then don't give or loan anyone money.