I insist merits to play Bullet on lichess to people regarding lichess as a waste of time in reality.

1: Strengthening fast decisiveness, bravery and mentality for reality and business.

2: Simulating and virtualizing our strategies of reality in our brains on chess board.

3: Killing time and making our moods fun to increase motivation on break times.

My experience is to set Blitz as the lower border where it can work as a training‘s tool. This Bullet premoving business is a good prep for poker though. ;)

Of course you can have lots of fun with Bullet, no doubt. I am strictly speaking of a benefit for chess.