I have to agree with you on this. I can't stand those things and especially can't stand that parents just turn a blind eye to their kids and allow them to roll around the store.

I had surgery on my left hip in January and am finally starting to get around better but I still have to protect the joint. Some kid almost hit me right on the hip rolling around on those things. Luckily I saw him and was able to turn and protect my hip. I shot the parent a dirty look but they were completely oblivious as to why.