Wiser, yes, profitable, no. And I never heard it being said of a performer "wasn't he/she wise to avoid the trap of using her looks to sell albums/seats, and instead let his/her crap performance sink him/her to obscurity? - We think so much more of him/her for this!".

Heck, if I had three arms and two heads I'd find a way to use the fact. Perhaps singing harmonies with myself while playing two instruments.