Hai yuh, tank main here.
I keep on tanking along. The trick is knowing which tank you need for the situation.
The only case I found where tanking is just about impossible, is with a team that doesn’t support their tank(s). Along side facing a team of 1 mercy, 1 tank buster, 2 tanks, and 2 dps. Very specific.
Then I just switch to Mei. My precious mini tank~ 