Isn't that pretty much what the naysayers said about the Internet in the early days? And the automobile? And the telephone? And the computer?
Can you not see that Bitcoin is steadily evolving into something more useful than when it was first released? They're making progress on scalability. Computer power is increasing much faster than the economy. We're getting better hardware wallets all the time. And multi-signature. Is there some fatal flaw that I'm missing?
Yep. "Today the Bitcoin network is restricted to a sustained rate of 7 tps due to the bitcoin protocol restricting block sizes to 1MB."--
https://en.bitcoin.it/wiki/ScalabilityAltcoins are useful for testing new ideas. The best ideas will be adapted into Bitcoin, right?
...
The block reward schedule, and the resultant 12% [current] yearly inflation rate is difficult to alter--impossible without a hardfork. A hardfork which must be agreed on by the majority of mining pools.
TL;DR: miners would have to agree to hash for fewer coins--ain't gonna happen.