CPU mining is only really profitable for some relatively new CPU-only coins.
Otherwise the profit will be really low.
Where do you get free electricity/internet? lol
And I don't know any server provider changing thermal compound regularly and servers are also running 24/7.
In general I'd say CPU mining is only really profitable if your PC is running 24/7 anyway or if you're combining it with GPU mining.
Your opinion is correct, electricity and internet are not free. I just think if electricity and free internet are possible with mining CPU will get a profit hehe.
but there's a friend of mine; he's doing CPU mining in
government offices, internet and electricity to be free, during mining in that place.