I'm enjoying the blockchain for 4-5 years already, not only since it's mainstream (1-2 years). I'm not sharing your pessimism, which doesn't mean you're not free to enjoy it as well, just like I'm enjoying my enthusiasm. I think only time will tell which one of us is enjoying the correct attitude.
Peace :)
I've been following Bitcoin since the beginning (that's 6 or 7 years, now?) and you can imagine my frustration, when its price peaked a thousand times and I never considered investing much. Lesson learned - never underestimate a money laundering scheme :D
Yes, I'm pessimistic (realistic from my point of view) that a thousand different cryptos will be widely used. That's highly unlikely - even the use of fiat currencies is consolidating - think of the US and EU monetary history. In general, however, I think that cryptocurrencies are the future of payment and we will see a couple gain wide acceptance.