SoloQ Elo

So I think it's a common trend that we can bust our balls and hard carry and then we get into promos... I can't mention how many times i've just gotten terrible teams in my promo games. Here is the last one. I'm in promos for G2 and yet there are FIVE silvers in my game. Correct me if I'm wrong but promos are about if you're are capable and playing at a HIGHER elo, not having to hard carry the elos you've left. I just don't understand the rationale. If we just look at the difference in skill. G3 places around the top 13% of players in NA where silver 3 is top 45%. So why does riot place us in the same games. The more depressing part is that the S3 Blitz HARD out preformed the G4 Alistar. What is the point in even playing ranked to get higher elo when I'm constantly plagued with lower elos playing in my games. If i wanted that, I would just play blinds.