Many people left the church because they want to contracept, they want to shack up, they want to abort. They want to choose lifestyles they know not to be good. They want to pick and choose. And why not with the plethora of non-Catholic Christian churches you can shop for whatever suits your whim.
A friend had a daughter who was living with a guy. She wanted to get married in the Catholic Church because... well just because, it was her right. The priest told her that they needed to have separate living arrangements until they were married. The couple actually left the Catholic church because the priest told them shacking up was a sin. He was more delicate in his expression. The mother called the bishop and complained that “how dare the priest make them feel bad”.
I know another woman who used to be Catholic. She left the church because the evening her mother passed away the priest was not available to go to the hospital. She was Pentecostal for a few years. Now she follows Joel Osteen.
A good friend grew up Baptist. When she married she joined the Catholic Church. She remarried after her husband passed away. This husband was never “churched” and was told by friends growing up that all Catholics are going to hell. They church shopped for a while. Now they rather like Joel, as well. To her, all Christian churches are created equal. Changing churches, denominations or associations is no big deal.
I don't understand what you are trying to say.