I am a Catholic. Why should I consider becoming a Christian?
I now know more distinctions (apparently Catholicism requires duty and salvation is process, unlike Protestantism?) but I still think they're of a similar branch (Christianity) so I just wonder the social factor
Catholics do a bunch of stuff other Christians think makes them not Christina.
The biggest one is the pope, catholic lore says the pope is the literal spokesperson for God on earth all other religions he doesn't have authority.
Idolatry: other Christian religions don't have a lot of images of saints or anybody other than christ and basically think catholics are wrong for worshipping Mary and saints on the same level as Jesus. Similarly it's the difference between catholic crucifixes (has the dead guy on them) vs regular crosses
Transubstantiation: according to catholic lore when the alter boy rings the bell that is LITERALLY the body and blood of christ you're eating. Pretty sure other religions think this is a step too far.