bitcoin is not profitable anymore. you should try altcoins. but if you will keep your bitcoins you can mine.
This is true. To a commercial grade mining altcoins will be the best choice, billionaires companies like McFee supports Bitcoin because they can support the necessary hardwares, maintenance and operations. It would be bad for them if the price will be below 3000$. They are one of the reasons why bitcoins system is running, and it would be bad if China will raid BTC mining farms there.
On the other hand I think Zcash is a good altcoin to mine.
Monero is also reaching hardfork.