I dunno about you......
But whenever my jungler gets invaded early game, I immediately stop whatever I'm doing in lane and move to go help them. Unless I'm literally on the verge of death, the instant I see my jungler need help in our jungle, I respond. So few laners actually do this though, and it makes me sad how no one values teamwork anymore. Unless it has to do with what's happening in THEIR lane at THIS exact moment, they don't really give a shit. They'd rather farm a few cs or poke their lane opponent once or get a couple auto attacks on the enemy tower rather than play like a unified team. I have absolutely no patience for these types of people, and I willingly admit that I've intentionally threw games because I've been matched with them. And I'll keep doing it, for as long as it takes people to learn to stop being selfish. I'd rather lose a thousand games by doing this than win a single game where everyone only looked out for themselves. That's just the kind of person I am. Deal with it.