If I should win a huge amount, I would use it to complete my Education & also upgrade my skills since these are areas I'm poor at. Gambling doesn't make you rich until you hit a Jackpot 
I have once have experience on it..And then I got the price to have win,I'm treat with my family going to buy our lunch and have some drinks..We enjoying an at the moment to got the money..but I actually keep some a little bit to invest.
Yeah, better treat your family if you win. But it should be better if you invest your winnings so it won't be wasted. It's really a wise decision if you invest it rather than by spending it with a useless stuffs.