why do you have to wait so long to surrender?

I'd assume it's to stop players (especially premades) from taking One look at the enemy's team... and deciding they don't want to do this fight, effectively quitting before the battle even begins. This would take away everyone's Time, IP, EXP and sheer gaming experience.

but surrender in ranked should be allowed at any time...

ok so what would harm be if shortening to 10 mins instead of 25?

And yet the way it works now

You get intentional feeders and such wasting 20 minutes of my time anyway

GREAT IDEA!

...Sorry, I see the current 20 minutes to surrender is Just about right. Even if you can't stop the Intentional feeders.

... 10 minutes till surrender sounds a bit... Pushy...

but No time 'till surrender, I absolutely refuse. Can you imagine game after game of people simply Leaving-- Even more so than it is. It's like literally Encouraging people to just have 0 tolerance or Attempt the game. Players would rant. Others would leave. And most would probably give up on league of legends entirely =/

...Anyways, if you don't agree, there's not much that can stop you from making your opinions known to Riot. Maybe some new feature or system would be implemented to make up for it, to continue encouraging players to Play, rather than leave.

Well, when your team 2/9 by 10 minutes into the game, it seems like a foregone conclusion. Sure, there are games that turn around 20 minutes in, but by the same token there are games where you have clearly lost before the match even started.

Solo unranked, for example, is a hellish piss-scape where every other game is a brutal massacre. What fun is 20 minutes of that?

Also, getting people who are ready to surrender to play effectively is like pulling teeth. There are certain emotional turning points where the round can just be lost in an instant, and "10 minutes with no enemy towers down" can be one of those.