Sadlt, some don’t even realize that they are not being good Catholics, or good Christians (for my former Catholic friends). My girlfriends are all pro-choice. Shocking. They don’t understand the Church’s view, nor do they care, because religion has been presented as just another lifestyle, not the Way and the Truth.
In a way it is the fault of the pre-Vatican II clergy. They didn’t teach Catholics how to confront opposite points of view, but just to obey Father/Sister. And Father and Sister were the same way. Once the changes came down the pike, they still went along for the ride, just in a new car. Like “Thoroughly Modern Millie” they went from straight to hip. Their new liberalism was just as blind as their former orthodoxy.