At a high level game pushing with mercs is fairly common. Assuming all things equal a 5v5 will be a relative stalemate. So if you have mercs on your side you can push with 5 and still accomplish something like taking down some towers. At low level games I agree it is fairly common to "cap and flee" but that doesn't mean it is the correct or even best way to play.How often do you push with mercs really? Sometimes you'll defend some ogres, but that is usually about it.
I was wondering about that, good to know.
75g per win on ranked with Stimpack. Probably a worthwhile $10 investment if you plan on playing a decent amount. Not even including it makes talent gating up heroes in solo queue coop much, much faster.