Is ffing in your promos really that hard? (slight rant)

I've done it multiple times because I know i'm good enough to get back into my promos if i end up failing. Some people just hang on to their promos like it's the last game they'll play in their life. I've even seen players not surrender in their 1st promo game even when all 3 inhibitors are dead and map control is all on the enemies favour. I've always heard this expression over and over and over again, "we win late game". I'm not saying they're completly wrong if a team comp clearly out scales another team comp then yes you're correct for a fact you will win late game unless you mess up really badly. But most of the time these games don't EVEN GET to late game. I've seen people vote no when they're hitting the bloody nexus. I get some of you want to be hopeful it's even good to be hopeful but sometimes it's just ridiculous. I'ts just a game at the end of the day move on and keep grinding and stop wasting everyone time on a game that's already over. And don't argue saying that if its your promo and you had the most kills to "carry" your games you would ff. As a matter of fact I would ff. If I had the most kills cs but my entire team is going to get one shot and I can barely manage to kill 2 people I WILL ff, because it's just a waste of everyones time.