OH no..I am 22 and I still love BMW. Even the earlier episodes watch them if only to stare at the boy you think is cutest-(for me thats Eric/Will Friedle). Or to say " boy I remember when my mom and dad said that to me" Plus there are so many funny one lines it never gets old.
I don't know if you've decided or not, but I think you should buy the dvds, especially if it's your favorite show. The only dvds that have special features are the first three seasons. Seasons one and two have audio commentaries for a few episodes. The season 1 dvd includes a bonus commentary from the season 4 episode, "Hair Today, Goon Tomorrow". The season 2 dvd includes a special visual commentary with Will Friedle, Rider Strong and Michael Jacobs (the creator of Boy Meets World). The season dvd includes a trivia quiz, which is in my opinion, nothing special. Seasons 4-7, unfortunately, don't have any special features. Something you might want to know is that a couple episodes are slightly edited (Eric Hollywood & Brave New World, Part 1). It's not overly noticeable, but it's still worth mentioning. I hope that helps. :)