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
You are correct, Catholics are a subset of Christianity... But similarly how people assume a "doctor" is a medical practitioner, Christians has become the informal name for "Protestant" or "evangelicals"
Basically "Christians" tend to mean, anything not "Catholic" (which is old school, visibly indistinguible from others in the Christendom)
But if Eastern Orthodox counts as "Christian" while Catholicism doesn't, that destroys the reasoning. If Eastern Orthodox doesn't count, then you're just referring to Protestants.
I don't think there's any explanation other than anti-Catholic bias, Protestants just want to claim their way of doing Christianity is the only way.
I don't really know all the details dude... My answer was just based on observations I have made in America (north and south)
I do not think Eastern Orthodox counts as "Christians" either btw
In any case, there may be no logical reason as I believe it is just a matter of misuse of the terms... Exactly how an "American" is interpreted as "from the USA" and not "from any country in the American continent" which is actually the meaning