Some people choose these churches for some reason. But there is also a segment that grew up in a particular denomination or faith and feel a cultural attachment or some tradition and continue to go there. Makes no sense to me either.
I finally left the UMC in 2002 when the church I was attending (a very old church with a graveyard) chose an openly lesbian pastor after the previous two barely closeted gay pastors left. One of the older ladies was quite obviously grieved about it, and I asked her why not find another church, and she said, "My parents and my husband are in their graves just outside, and my plot is waiting for me next to his, so I guess I'll have to stay."
Elder abuse. So sad.