I live where I do as I was, essentially, told to, due to a job that required extensive global travel. About 15 minutes from LHR.
However, I used to use LGW some times, and the family used it for Holidays.
I am perfectly happy with either airport, but have a very marginal preference for LGW as LHR T5 is full of DYKWIAs. ..................many ignorant folk shouting to their telephones.