With lottery you have mathematically proven extremely small chance of winning (close to zero). So for people lottery is just a game. People buy it, and expect to lose money.

With bitcoin some people expect FOR SURE to increase their wealth 100 or 1000 times.
Exponential growth is quite dramatic thing, that can lead to disasters.
I am not wishing anyone ill, i am just frightened by such huge expected rises of value.
I think it should be a more gradual thing. And also I am a bit shocked by feelings of entitlement.
If I had a lot of money, I would maybe buy just one or two bitcoins, just in case they boom, that I am not the last one left behind.
But I would never put all of my money into it. I wouldn't even put most of my money into it. Probably just a small fraction.

When it comes to accepting large inheritance I am undecided about whether it's ethical or not. Maybe inheritance law could be modified if not abolished completely. However, it's normal and natural for parents to want to leave something for their children, so I don't think it's really wrong. And also they probably worked hard for years to earn that money, so they can decide what to do with  it as they please.

Edit for spelling mistakes.