Why when someone afks before 10 minutes you should lose less lp

Ive been in soo many exhausting games where I have a player on my team DC or ragequit very early on in the game. When its 5 minutes in game and you know its a 4v5 it is very discouraging. I believe that if players were given a reduction in LP loss after a early on DC game they would be much more motivated to continue playing. It is a terrible feeling when you know your going to be given the excact same LP reduction for a game in which you deserve to lose an actual 5v5 where better team wins compared to a 4v5 where my Garen Dcs at 5 minutes. If anyone leaves or dces before 10 minutes players on the dcing team should be given an LP loss reduction.