There are some decent pop punk bands, like Propagandhi, RVIVR, Fifteen, or The Measure (there are lots to list, really). I'm pretty cool with them as long as they're somewhat DIY or have a decent/fun message. There's also a lot of really bad mainstream pop punk bands that need to go straight to hell because they stand for nothing punk does, they just want to cash in on a hollow shell of what they claim to represent.