Time for a change to LP

Why is it that it takes more games to win LP than it does to lose it? I can lose the same amount of LP in 3 games that it took me 4 to win. Why is it done that way in the lower ELO's? I don't think its fair. I have been stuck in bronze 2 for weeks trying to get out but every time I get off a winning streak I will lose any any progress made if I get a few bad teams. I had one the other day where I was in 2, 4 vs. 5 games and I won the first and lost the second. I only won 16 LP for the first game and I lost 22 in the second. Thats not fair at all. I was in a game where 3 of my team mates quit and I lost 21 LP. How is that fair? Why is that happening? I think you should at the very least win and lose the same amount of LP until say platinum where it gets more competitive and its easier to judge talent. Before that it is just too drastic of a change game to game to judge and so penalizing so harshly is stupid. I think they need to change it.