Mathematical proof that you should never surrender in ranked to climb:
Let's say you are really behind at the 20 minute mark in a ranked match, with only a 5% chance of winning. If you decide to surrender, you have a 100% chance to lose 20 lp. So expected gain = -20 If you decided to not surrender, you have a 95% chance to lose 20 lp and a 5% chance to gain 20 lp. So expected gain = -18 This results in an expected return of +2 lp for the 15 minutes you spent continuing the game. You may think "If I surrender now I can start a new game." Well, you only have a 50% chance to win the next game, which is an expected gain of 0 lp. Since voting no to surrender has a higher expected return, it is the better option.
Idgaf if theres a 0.00000001% chance they all DC and we win, ITS NOT FUN. Guess what, games are for fun first, and tryhards like you ruin it for everyone else.