I do not travel with children, adults only in my party when I go.I ran a survey on another chat site about a year ago as FP was always a hot topic also -- over 120 respondents and some of the interesting facts were:
75+% of those who didn't like FP did not visit the park with children
80+% of those who did not like it were AP's - with ready access to the parks
90+% of those who did not like it, had used FP at one time or another. A few refused to use it.
I had those handily avialable-- the survey was 10 questions-
the net was those who liked FP ( which were 75+% of the respondents) - tended to be WDW ( almost exclusively as opposed to DL) visitors - families with children and visited the parks 1 -2 times per year maximum, with most trips in the summer vacation peak periods.
Those who did not like FP tended to be adults only - no children in parties, and AP's whose availability to attend far more often and at various times of the year.