Don't win the lanes!

I should probably stop winning the lane I'm in.. I don't know why but each time it happens by some real margin (being 3/0 with more farm), my team mates act as if we won all the lane by that margin and start throwing like there is no more rum.

And by this I mean that they start going alone or in 2 vs 4-5. They don't care about defending nor of team play and I find myself to roam around defending 2 towers, trying to join then for a dragon and/or a teamfight.

Since the huge amount of throws I see in general I came to the conclusion that winning your lane is actually bad. You either have a one-man-army champion or you'll just see the ruin.