I would rather play 6 PvPs in a row as opposed to like 10 TvZs in a row which seems fairly common these days. At least I would have a chance of winning a game.
If you didn't play protoss you would never play a pvp. Seriously though what do you want Blizz to do? RNG is RNG. They could reduce the chances for mirror matchup, but then what if people start to complain about no mirror matchups?