There is nothing like better option, the only difference here is that one is an old traditional market and one is a very new market and the level of volatility is higher with bitcoin than it stocks, which also depends on the stock you are trading anyway. However, whether you are trading bitcoin or stocks, it all depends on your level of knowledge of any of the market and how well you are able to handle yourself in any of them. If you approach any of them like gamble, then you will most definitely experience the same fate anyway.