So a lot of us have these highly optimistic views towards crypto and bitcoin, this is fuelled by nothing more than the desire to make money from something which has had it's day.
you are correct about the hyped-up situation of cryptocurrencies from time to time but it all comes down to utilities in the end. when something has them it will continue to rise even if in short term it struggles and if it doesn't then when the hype wears off that thing will simply die with a slow downward spiral.
that is why bitcoin keeps recovering each time it goes down while altcoins get pumped and then their dump is the end of it all.