It should be called: "Top Reasons People tell a random phone call/email survey what would theoretically consider changes churches".
My anecdotal non-denominational experience tells me that issues of theology is extremely small (insert comment about non-denominations not having theology below!). People leave all the time because: the music was too loud, the music is too quiet, they never play my favorite chris tomlin song that I have repeat on the way to church, the pastor never called me, the pastor called me once, my small group didn't know the issue I never told anyone about, the pastor combs his hair so he's clearly all about himself, they asked me to give money, they asked me to volunteer, they never asked me to volunteer, the pastor doesn't preach about sin enough, or the pastor preached about sin but it was the sin i liked to do.
I am sure there are more.