What free market really means is competitions between currencies, currencies with too high inflation will of course fail but dogecoin are doing surprisingly well despite 5% yearly inflation. xmr has tail emission(unlimited supply) and it is still valued very high currently(doubt it will last though). All coins that is mined during a very short period(including sdc) has failed to get widespread adoption. A large amount of coins being mined generally leads to low price which is good when buying, sure you want it to go down later, tail emission is not really the ideal solution.

Well good luck, i will not invest in a currency i do not have faith in, prove me wrong, i don't care if i am wrong and the amount of money i would be willing to invest would not make me rich anyway. I prefer trading coins which have high volume, and be able to cut losses short, but i might have to give up trading due to poor results(only holding btc would have been more profitable overall).

Of course btc will probably run into some problems after 8 to 10 halvings but we have to wait 24 years for that and as i said before if the price increase more than the decrease in block reward the income to miners will still increase with time. The real risk with btc is mining centralization and it is even worse with xdn.

All current coins has issues, we need something new and revolutionary(instant transactions, anonymity, messages, etc).