This is a good use for the money that you have won. Securing yourself to have your own dream house is one of the greatest achievement a person has. Everyone has a dream to buy their own house and with the help of gambling you can buy it easily but only if you had won. Investing the money you had won into a business is a good idea.
Simply stupid, people who have been invested on gambling not looking their family with this money. Mostly people do invest on gambling for their entertainment and greediness to make money more.
I have friend who won around 3 BTC in gambling some months before and he went to Australia trip with that money.