I agree with all you are saying, I have been burnt with different coins. I have lived the ups and downs, but honestly I do believe the blockchain. One of our projects will grab hold in a real way. Even BTC the biggest badest and at nearly $25k as of this writing, it still has BIG issues.

1. It is purely speculation driven or HODL right now, a replacement for gold and silver at best.
2. It is SLOW
3. It is expensive to use/transaction fees

Because of these reasons IMHO it will never be the currency replacement we will use, which is why I believe in Alt coin. We have thousands of coins that have solved 2-3 really well. At this point I think Litecoin will beat BTC in near future for usability but we need adoption.