Music definitely adds a layer or takes away from a show because it actually helps set the tone. Now of course there's always people who just skip the intro every time off rip, I'll never understand these savages but I let them cook.
A fire intro will get you in a certain mindset for a show (hype, dread, etc.) and then it's inextricably linked to that material in your mind. For instance AOT last season had me bopping every got damn time but I knew it was going to be hell on wheels the whole 20 some minutes but that shyt hits and I'm focused.
Then there's the deceptive bih looked like a 9 on the gram but a tragedy in person series like MHA where some of the intros hit and then the show starts and it's ass.