Because they're punderful!
A: Ah, but that's the beauty of it! Puns are not bad, they're just punderful! They're the root of all wordplay, the peak of all wordplay, the punder of all wordplay!
A: Don't worry, my punderly friend! With practice, you'll be punsling puns like a pro in no time! Just remember: it's all about the play on words!
Learn How to Pun, Pun Conversions 101