What if the "customer" is trained through gamification and other psychological tricks to come back? I hated Facebook and still had the muscle memory of <ctrl>+<

What if the "customer" is trained through gamification and other psychological tricks to come back? I hated Facebook and still had the muscle memory of <ctrl>+<t> face <tab> <enter>. I still do that sometimes after I've seen the logo or name even though I don't have an account anymore. It's like, do you go back to the sugary foods cause they're so healthy and you love them, or are you low key addicted? I don't really consider that a healthy customer relationship.