Dogecoin mining is profitable now and there is also boost for mining in dual mode with litecoin mining as it has the same algorithm script algorithm.
Thats called , merged mining and this already exists for a long time , but not much pools back in the days offered this this feature , there was just a few.But yes using this mode would be profitable and the best option in my opinion nowadays.
These coins have no real value IMHO. But that is only my opinion and I was already wrong about doge before . 
so it is just a roulette. Or what do you think ?
About the value it depends what Musk or Trump will be doing with it , but yeah normaly there is nothing speciall about them. so it is just a roulette. Or what do you think ?Isnt every Coin you have or get into a bit of an roulette in the end ?