We may all want to pretend we don't like repetition in pop music, but obviously, it works and has worked for decades for a reason. Believe it or not, like many things, there is a science to why music affects us the way it does. Our brains react to repetition by memorizing and retaining, even if we don't want them to. So even if you hate a certain song, notice how after some radio exposure, you still somehow know every word? Guess what? That is repetition winning. Almost like classical conditioning, but with music as a variable.
As in most cases, there are people who can explain this to you far more delicately and accurately than I can, thankfully for both of us.
So even those pop songs that you rally against, too bad. Seems your brain is going to take them in and learn them anyway. It's nice to finally understand the science behind that a little better.