Bitcoin is indeed risky. But bank investments are risky too. In our country (coz I'm not sure if this exist in other countries). When you have a large amount on your account they will call you and ask you if you want to invest, minimum of 20,000 Php (or 400 USD). They will propose some investment plans where there is a choice of low, medium, or high risk investment. When you choose the high risk there is a chance to lose or gain 100% of your investment (Medium is 75% and low is 50% if I remember it right). It doesn't make sense to me, it sounds like a scam, they will invest using your money and you don't have any control to it. That is why I like bitcoin more, coz Though it is risky and it's very volatile, you have full control on your investment.
What do you guys think?
All investments have risks. However, in terms of bank and bitcoin investment, Bank Investment has more risks because they are going to control you investment and will give you interest according to the exchange of that particular time or day. Bitcoin has lesser risks because as you said, you can control your investment and be able to see the progress of it.