OMG, yeah I have developed shopping cart rage ever since I started this part time job of mine. Basically I go to 3 grocery stores per day, delivering supplies to group homes. I can't stand people blocking aisles, & it's even worse when they see you, then just ignore you, leaving their cart smack dab in the middle.
I always make it a point to park my cart near the sides, & prefferably with a little space if i'm blocking certain goods.
It's pretty bad, that lately I'll just put my cart in the center of where I'm going to do my shopping, & I just walk to whatever I need & then drop it off the cart.