I hate to say this, but jick might have a point.
I was at a non U2-related discussion board when the Vertigo video came out, and the majority of the people on there, who I would assume were casual fans at best, said stuff like "good song, good video, and they still look good!"
I believe the band's physical appearance doesn't matter a great deal to the die-hard U2 fans, but the general public is very different. Like it or not, we live in a very shallow age.