why not giving a chance to best of 3
Because most people don't play that way.
You can play a series of such best of three matches against your friends.
Don't try to impose it on the rest of us.
Monday I think it was. I played a 10 minute game where I lost my Queen to a mouse slip and lost. Dutch opponent offered a rematch which I won then we played a third game. I won the best of three. Very pleasant but it was spontaneous.
I can't always play three games in a row. Time issues before work in a morning for example.