I would strongly advise against it but it's your BTC / Money so do as you will. Would you use your investments for fun or would you just use your regular cash? My outlook is to use a percentage of the fiat i make from my job and convert it to BTC every month, but I look at it as an investment. Don't get me wrong sometime i'll use a small amount for some sports betting because it's something I enjoy doing and when / if I win, it goes right back into my wallet. It all depends on how you view bitcoin itself and that will determine how you accumulate and use it.