There are whales definitely. These people are controlling the price of bitcoin by pumping and dumping. Is it bad? Maybe. Maybe not. If you are them, wouldn't you take advantage of the market and play it too to have more? Of course you'll play it too. I know I'll play it too if I were them. But since I am just a plankton in this crypto scheme of things, I just follow the tide. And I hope not to be swallowed by it and earn a little here and there from my trades.

I ask this too for myself. However, I think you can plan your own method. Like making a last will of testament where you give your love ones a piece of the paper where there are separate parts of the private key. In regards with the Nano Ledger I think if you lost it you can still retreive it as long as you have the private key.