this band i simply hated more than any other....not sure why, but man i detested Wings.
For my wife, the answer is simple: she just didn't like Paul's voice when singing mostly solo, whether with the Beatles (Yesterday, Long and Winding Road, ...), solo, or with Wings.
Make no mistake, Paul was brilliant in pulling together a song instrumentally. But his vocal range headed to the rafters at times. No one was there to balance him when solo or with Wings.