OMG! YES!!!
It is the biggest pain in the bum. I get really annoyed that people use it to pop into the supermarket. They don't need to open their doors wide, do they?
And as for the people with older children!

Why do they do it? They must remember what it's like to have a baby (or two) in tow. When your children are school age, there's really no reason that I can see (although I'm prepared to be corrected on this) to park there.
I hate having to leave mine in the car while I sprint for a trolley trying to keep an eye on my car and feeling like a bad mother for leaving them alone. So if I have to park further away it really freaks me out. I just wish I could pluck up courage to say something to these people.