If you aren't fully prepared for what's coming don't jump into mining, miners have been in bad shape since last bullrun in 2017 to early 2018 and many shut down their miners, just because it's profitable to mine right now doesn't mine things will remain the same for miners, another thing to be worried about is ETHASH Algorithm, this Algorithm is the most profitable but the best coins on this Algorithm ( ETC and ETH ) are changing to POS and other algo soon, meaning your gpu will be less profitable too, it's better to buy coins unless it's your hubby already.
And talking about electricity, it might be cheap but you can’t get it for free, and another thing is that it’s not cheap everywhere, it’s costly in most places. I have only heard that the electricity can be cheap in China, which I am not really sure about, but this same China has been locking down on Bitcoin miners and trying to prevent them from engaging in the activity of mining and selling Bitcoin.
One of the ways they are doing this is by tracing every bank transactions that has to do with crypto and freezing every account that’s caught related to it. That way miners will be scared that they are losing and then they will be discouraged. As for other places, electricity is costly.