I like this content! great post! :^D
In my honest opinion, due to computing power mining of bitcoin which not everyone has I don't believe mining bitcoin is profitable, what I mean is like china, a single corporation in this country mines roughly 25% of the computer power mining of bitcoin in the whole world, the fact that the competition in the usage of electricity just to mined bitcoin is totally a scare factor to all miners of bitcoin.
Yea mining Bitcoin at this point takes so so much both in gear and electricity. Right now thats where the steepest competition lies I think!