Is it bad I don't like public displays of affection?

I was wondering how others felt about the fact that I don't really like being romantic in public with boyfriends I've had. I worry that it'll make others uncomfortable, or provoke a negative response- maybe it's internalized homophobia, but I'm just not a confrontational person. I do live in an area where homophobia is common, but chances are, no one would actually do anything about it, so I wonder if maybe I'm a little unreasonable- both boyfriends I've had in the past were okay with it, but I worried if it made them think I was ashamed of them; I definitely was not, and that leaves me with some mixed feelings on the whole matter. How do you all feel about it?