This is something that has bugged me for a long time. I am constantly seeing men in vans in parent and child spaces amongst others. I would never park in a disabled space or a parent and child space if my dc were not with me!
Today I waited for a space at the GPs and when the person left a clearly signposted parent and child space someone cut me up and sped into the space. She then got out WITHOUT A CHILD. I wound my window down and said excuse me, I was waiting for that space and you don't have a child with you. Did she have the decency to back down or apologise? No, she gave me a tirade of abuse! There should be passes or something for those spaces, (like the disabled ones) to fine people who don't use them correctly.