I am back after 7 years to help and learn

I used this site in 2002 when I had my surgery and feel guilty that I have not since visited to either help others or learn.  I would be happy to help but also learn from those with more experience than me, particularly in the aging process.  Many times I wonder is this (wahever) aging or my surgery?  I feel too frotunate to complain but relaize I may be able to improve my quality of life or help another.