mining will never stop because that is how the design works. it can stop only if every single person the the planet stopped using bitcoin.

the "design" is that if for any reason some miners stop mining (for example like the time when they switched to mine bitcoin cash and dump it for bigger profit) the difficulty will drop and make it easier for the rest of the miners to find blocks at a normal rate (1 block every 10 min on average). and it is adjusted every 2 weeks if i understood the adjustment correctly.