>Other coins are clearly superior in functionality (except maybe the hash rate).
This isn't true, and the opposite is quite true.
Bitcoin is the only coin that seems immune from a 51% attack. Every other coin has a significantly lower threshold needed for people to commit a 51% attack.
Ethereum and other Blockchain coins are not 'superior', they use the same POW solution as Bitcoin. Often, another coin will discover a new way to make blockchain better, and Bitcoin adopts it later. When Etheruem failed to scale, I sold all of my POW alt coins.
The rest of the coins are centralized, which defeats the purpose of blockchain. Entirely useless as cryptocurrency.
I see a future for Bitcoin and Stable coins. I don't see alt coins doing anything Bitcoin cant.
Ethereum didn't fail to scale, its just taking much longer than anticipated. The plans are finally coming together though for PoS and Sharding on the base chain, with layer 2 there for more scaling as needed
> Bitcoin cost of 51 percent attack is ~400k for 1 hour. ETH is 90k for 1 hour.
Seems not wildly different to me and nearly the same order of magnitude, and you are also admitting that 51% is a concern for Bitcoin, so it sounds like we're agreeing now!
> POS uses few users to validate transactions.
The "few" can be quite a large number, and those same validators are by definition very invested.
This isn't true, and the opposite is quite true.
Bitcoin is the only coin that seems immune from a 51% attack. Every other coin has a significantly lower threshold needed for people to commit a 51% attack.
Ethereum and other Blockchain coins are not 'superior', they use the same POW solution as Bitcoin. Often, another coin will discover a new way to make blockchain better, and Bitcoin adopts it later. When Etheruem failed to scale, I sold all of my POW alt coins.
The rest of the coins are centralized, which defeats the purpose of blockchain. Entirely useless as cryptocurrency.
I see a future for Bitcoin and Stable coins. I don't see alt coins doing anything Bitcoin cant.