Yea, it is sad to see that many of crypto-coin project are handled as trading assets and not as what it started with: open currency. I would love to see more stability so that cryptocurrencies can be used for buying stuff more easily.

otherwise there wouldn't have been a cap on the number of Bitcoins that can exist

there are other reasons for this: an uncapped coin is inflationary, so it can loose its value given enough time, no matter what happens to the economy around it. But then again, many projects without a cap try to set the emission-rate so that it somewhat balances creation with burn (for example by lost wallets or transactions to invalid addresses).