This year; ieo unfolded.
It was supposed to surpass ico and be a better crowdfunding method; but it has gone cold faster than ico did.
If you compare Your experiences too; between altcoin and bitcoin; you would notice that
1. Altcoins are so many; that they replace one another.
If an old altcoin dies
New altcoins will replace them and old one will be forgotten... It goes on and on
2. Bitcoin has maintained its class and importance;
Is it that bitcoin is the only hope for the future ??
Too bad no merit on this thread

Bitcoin is the king of cryptocurrency. It has the strongest team of developers and yet the most trusted cryptocurrency ever. Bitcoin is the most popular cryptocurrency though with the market dominance of approximately 67% and the market capitalization of over $150 billion. Bitcoin is the future of cryptocurrency because people TRUST bitcoin more than any other altcoin out there.