If you would have asked me this question in 1995, I would have said yes.
Losing my hearing was one of the most difficult experiences of my life (given how blindness impacts hearing loss and vice-versa) and I can't count the number of times I wished my hearing would come back.
Once I learned how to use alternative communication and mobility techniques for the deafblind, I learned to accept my deafblindness.
Given where I am today, I would probably take the pill if only to find out what "normal" hearing is like. 