bitcoin is not profitable anymore. you should try altcoins. but if you will keep your bitcoins you can mine.
Bullsh**
For both BTC or altcoin mining only 2 things matter:
Cost of your electric
Being able to deal with the heat and noise produced
Cover those 2 things and you are Golden. The >US$8k/mo in gross revenue my 240THs farm makes is hardly chicken feed.
What you said is correct that electricity cost and dealing with heat and noise produced should be handled first, then only you mining will be profitable. Instead of mining bitcoin you can min altcoins which are giving good returns in both mining and when mined the price should be good to exchange to btc.