Wow, thanks for all the suggestions.
I got some work to do now, this is gonna be fun checking out all those tunes. Might just get me excited again.
Yes, you do. Classic rock from the late 60s through the late 70s, great though some of it is, is just a tiny sliver of the musical universe. Besides, there are only so many times you can spin Stairway to Heaven or Dark Side of the Moon before you get sick of them.
Many have suggested trying jazz and classical, and I concur. Spend some time with these genres, and not just the old warhorses like Kind of Blue (in jazz) or Beethoven's Fifth (in classical). Listen to a variety of pieces and subgenres as not everyone's taste is the same. Your personal favorite might be something comparatively obscure, or if not obscure, maybe not a jazz title that gets mentioned frequently here.
If, for some reason, jazz and classical isn't your thing, explore some more obscure material from your preferred era, like garage bands, or surf music. None of us can contemporaneously keep up with everything as it comes out. I have over the last 4 or 5 years filled in some huge holes in my collection. After hearing some of these classic artists, I couldn't believe I had glossed over them back in the day. Not to say I disliked any of these musicians back in the day, but at times I missed what great songwriters they were/are. Examples for me from the last few years include Leonard Cohen, Nick Drake, John Hiatt, Little Feat, Allman Brothers, The Kinks, and Stevie Ray Vaughan.
Finally, try moving beyond the 70s and explore some of the real classics of the 80s. Every try punk rock? At its best, it can be a lot of fun. Every give early REM a listen? Their first 4 albums are as good as anything from the early 70s. How about the Replacements or Husker Du? Or the Pixies? Or the Stone Roses? Sometimes that late 80s stuff gets lost in the narrative of the history of rock somewhere between the demise of punk and the rise of grunge. And since we are talking the 90s, one of the real classics of that era is Neutral Milk Hotel's "In the Aeroplane over the Sea"
And that brings us to the current era where Green Day, Wilco, New Pornographers, Built to Spill, and The Decemberists have been producing outstanding albums for the last decade.