...is such a bullshit mentality. People, get it through your heads that this is League of Snowballs. Aka League of Oneshots.
If the enemy gets ahead, it's over. They will kill you by just looking at you. And there's nothing you can do to prevent that, only delay the inevitable.
The game should actually end after the first tower is taken. Destroying the nexus from there is just a formality.
Don't stall games that are already lost and don't make the suffering of playing an unwinnable game longer than it's necessary.