Unless I missed some big news, all PoS coins are doing fine except for Vericoin's fiasco.
PoW is the best way to distribute a coin, but PoS seems like a more logical choice for efficient and cheap security which favours all users rather than random miners.
I'm not familiar with all PoS coins, but pretty sure most of them is not doing great. They tend to lose in value. Peercoin, MINT, Colossus to name a few.
Mining is always related with certain costs (hardware, electricity) which should, in theory add some value. While PoS will be considered by many as 'free coins' and they would more likely to dump them at any price.
It would also strongly affect number of transactions (tipping, donating) and promote hoarding.
I'm not totally against PoS idea, but just don't see it as perfect solution. Think PoW with reasonable inflation is better imho. But unlike others, I'd rather see DOGE as functional currency rather than as investment commodity (just like with fiat, you wouldn't keep USD under your mattress, coz it'll lose its value over time, and if you want a gain - you'd need to invest it somehow).
