I dont like surrendering to winnable games either. For example, if both other lanes feed, lose and try to surrender, but im extremely fed and dominating mid, i will tell them no. Just yesterday, was playing tristana. normal blind pick, not following meta, our vayne and hecarim top feed darius hard. Hec leaves, darius keeps me from completely dominating mid against fizz. (adc trist btw). Im still fed, bot loses. I say, all right, defend the inhibitors. My teammates do, i destroy top while the enemy is distracted. Get killed. Repeat with mid. get killed. We get their top and mid inhibs, they get ours too. I send vayne bot, she gets to 1 nexus turrets, gets killed. I tell them all to defend the best they can. Go and destroy all respawned inhibitors, then nexus turret and nexus, before the enemy could kill me (fizz and one other came back to kill me, i killed both of them). I destroy their nexus by my self with 4-5 bars health (my minions were fighting enemy minions). THere were several surrender votes that game (i did agree to the first couple). Once i realized i could get the lanes easily by distracting them, i stopped surrendering. I carried that game harder than i though i ever could, even though vayne and hecarim fed hard. (our darius was only fed from defending, though) I recorded it with lol replay, i might upload the game to youtube lol i liked it alot lol.