Banks may be safer in some ways, but I always like to think outside the box. When I invest in a banking product I know that the profit will be low, so the risk is also low, but for me that is not the most important thing. From my point of view, the most important thing is what the bank uses my money for, where it invests it. In my country many banks invest in the arms industry and that is something I don't like at all. Since I have never liked banks, and they are (and will be) the cause of many of society's problems, I prefer Bitcoin and the freedom it offers me.
I know that Bitcoin and cryptocurrencies in general are riskier compared to banking products, but it is a risk that I take personally and no one decides for me.