I got bored after playing ladder for a while. When I would queue sometimes I would get lucky and instantly find a match, other times I would be there for hours but I honestly never really liked playing lots of 1v1 just because its just me playing solo. There is also the reason that I keep playing the same people that always do similar things so there is never much variety in gameplay .I find it far more interesting to queue with some people I know or host a custom lobby and get to play something semi-unknown.
I am also unsure why there seems to be so many BO warriors all of a sudden. I have never prepped BO's for ladder or practiced ladder maps, especially since I never play 1v1. But except from playing someone on a map like the ditch where having more experience is extremely valuable compared to having little to none, I have 'probably' never seen a replay I lost and though they had a better BO or played so many games on the map that it was unwinnable for me.
I am sure it is much more impactful to have a BO in lower ratings as you can beat someone who is 'playing better' throughout the game. however, anybody who uses it will gain rating and get to the point where they either face other BO beasts or play people who beat them after their BO has done whatever damage it has unless they are intentionally keeping a low rating which is a whole other problem.
Anyway, I might play ladder again if I gain interest in it against since it is really random for me if I want to play or not.