Why some players quit Go

The current South Korean champion and the former world champion Lee Sedol finished his career in 2019. The winner of 18 international and 32 domestic tournaments named one of the main reasons for his early retirement to be artificial intelligence that he could not defeat.
The Go playing artificial intelligence AlphaGo was developed by Google Deep Mind in 2015. In 4 years the machine crushed 20 of the strongest Go players and 2 world champions: Ke Jie from China and Lee Sedol from South Korea.
The AI won every game by a landslide. Experts now estimate future chances of winning against an AI to be very low. The only thing that a machine can never learn is to love the game sincerely and wholeheartedly, the way only humans can.