I'm thinking and thinking a lot about  following thinks, maby you will call me paranoid but i thinking still about it

1) whats happen if tomorrow all BTC is 1$ worth?

2) what if all countries govoment do crypto currency eg. bitcoins illegal?

3) I can put my bitcoins in a physical product where I can graders me much better against the volatility that is bitcoin exchange rate?

4) The very best way to protect against a hacker attack or against a steal all your money from your wallet ?, are there any ways to choose a safe solution here?

I am a little worried about it and naturally want to protect myself as best as possible.