Do you swallow??TMI!!

Ok so in my past relationships and now current everytime I gave a guy head I swallowed his cum... I think it's weird not to. My first bf was when I was 16 and he was the first guy I ever went down on when I was 17 but he told me then that some guys find it rude or disrespectful if you don't. I could careless what guys thought but I wanted to try it. His tasted sweet (weird I know) but I've tasted some nasty ones too. Only 4 guys but they all tasted different. Does anyone else swallow and know what I'm talking about is there a way to make them taste sweeter. I love the guy I'm with but sometimes it's more sour than sweet. Sorry for the randomness in this topic. Judge me if you want IDC or just comment