I agree with all, but 2).

The hash rate is not what makes Bitcoin secure. It’s the distribution of the hash rate and that is getting more and more centralized (just have a look at mining data centres!).

I’m pretty sure that Bitcoin will fail due to that centralization and the financial incentives provided by attacking the network under certain circumstances - only I don’t know when that will happen.

Any coinbase reward halving can be such a point of time - the next being in less than one year from now.

If you are interested in such a scenario and the reasoning, have a look here:

reddit It's Happening!!!! • r/Bitcoin Price is on its way to $200. Will be interesting to see what happens when the miners started turning off their machines. Hang on folks!

Still I think distributing dividends in BTC for all the other reasons.

Especially 3) makes it easy to get rid of BTC