Why do people not understand when it is right to surrender?

Please don't give me the bullshit argument "never surrender xddddddd anything can happen in low elo!"

But no i'm serious, there are so many games which are just over within the first 10 minutes and people don't know when to surrender. People in low elo are dumb, however everyone is dumb. A dumb person with a lead can still snowball it well against a dumb person without a lead.

The thing is, yes it is low elo, and people are capable of throwing, but when they are 20 kills ahead they likely aren't going to do that.

There's probably about a 10% chance of the enemy deciding to throw an absolutely massive lead, and I've been in games like that a few times, however I don't want to be stuck in a game the other 90% of the time for 30 minutes longer while the enemy team is dicking about the map having fun and we're stuck in a corner getting murdered if we step past the inhibitor line.

It's really not fun, people have this stupid anime mentality that "we can just come back if we all work together as a team!". No that's not happening, stop and learn to surrender. I'd much rather just lose my 20 lp and move on to next game where I might actually stand a chance of winning.