I so agree. I have 3 under 18 months and it drives me mad, esp if the p & b spaces are miles away from the trolley park.
Regards the disabled in a p & b spaces, my friends hubby, who has always been a lose cannon, ask a disabled couple to move from p n b space to disabled (which incidently were all empty and closer to the store!) and they wouldnt so he parked his range rover across the space, blocking them in and went and did his shopping. The disabled driver cldnt believe it and called the police, who thankfully were very reasonable, and basically said the disabled drivers should have parked in the empty disabled ones, hopefully it will stop them from doing it again.
My fil is disabled so i have no time for abled people who park in disabled spaces, but equally no time for disabled people who park in p n b. supermarkets cant actually fine you for parking in disabled spaces, and i parked in them when i was really heavily pregnant with the twins as I simply cldnt get out of the car in a normal space as there wasnt enough room to open the door wide enough.