The people who believe their religion is he one true path to salvation _do_ tend to proselytize.
Thing is, many religions don't think they're the one true path to salvation (and in fact many don't even have a "salvation" going on). And people who hold to those rightfully get annoyed when they can't have lunch in peace because someone shows up on their doorstep trying to convince them that this someone's religion _is_ such a one true path.
The key problem with proselytizing isn't that it happens, it's _how_ it happens.
Thing is, many religions don't think they're the one true path to salvation (and in fact many don't even have a "salvation" going on). And people who hold to those rightfully get annoyed when they can't have lunch in peace because someone shows up on their doorstep trying to convince them that this someone's religion _is_ such a one true path.
The key problem with proselytizing isn't that it happens, it's _how_ it happens.