because mostly the disconnection is due to internet connection problem and it fixes itself in a few seconds.
+1. I'd stop playing live if I lost instantly after losing connection, that's just ridiculous. How would you feel if your connection just went off for a minute in a winning position and you lost? It's frustrating, but the system works well to prevent game abandoners from causing too much damage and to co-operate with bad connections.
Can someone tell me why people get 2 minutes reconnect when they leave?
It seems kinda unnecessary, you shouldn't leave a game, and if you do, you should get an instant loss in my opinion. It's very annoying when people don't resign, but just leave instead.