@JoyBeorge
"PIP is not mens tested so your income has no bearing."
This is part of the problem. @TreadLight said they don't need the money because they manage on their decent wage, but your attitude is "well, claim it anyway". Have you never heard of personal responsibility? In the very wonderful words of Jeff Goldblum in Jurassic Park; "... so preoccupied with whether they could, they didn’t stop to think if they should.”.
I bloody hate this entitlement attitude, and it means there’s less money for those who actually need it, as those who don’t need it get a nice little extra bonus. We tried to do the right thing re CB when our household income passed the threshold for the taper and stopped claiming because we didn’t NEED the money, however, with hindsight, I wish we’d carried on claiming our ENTITLEMENT so we could have give the kids more.