Agree ....but I doubt we can get free electricity until we have our own solar panel to use as a source of power and being a manufacture of hardwares ..you don't require to even think of the profitability .
Best option to put Altcoins in your portfolio.
Sure what I want to say is mining can be profitable only if you have an advantage (electricity or device) or if it is not possible to buy on the market.
If you are normal people then don't mine as it will not be profitable.