Same with me. Except I was in high school in the 1960's. We'll probably my favorite band in 1967 was Mitch Ryder and The Detroit Wheels. Got to see them. But The Beatles we're big for me as well as the Rolling Stones. Cream and Jimi were major favorites and The Doors and CCR.
When I first heard the ABB, they had a very profound effect on me. The musicians not only were extremely good, the way they played together and their no glitter, working man appearance was captivating. And the music was so spiritual and just reached inside you. Since my first time seeing the ABB, they became my favorite instantly. And it was a complete surprise. Like going to a party with no much expectation and meeting your future wife.
So I'm always looking for something new and enjoy lots of musicians. But about 1/4th of my music listening is the ABB and half of that is the original line up.
Brothers and Sisters was their best selling album. But to me, their best albums by far are Fillmore East and Eat A Peach. Compare any album post Eat A Peach to Eat A Peach. Brothers and Sisters may come close but nothing in the 1990s or Hitting The Note from 2003 are in the same league as Eat A Peach. Eat A Peach is a classic from the opening note to the fade.
So my music tastes haven't really changed. Just expanded.
I don't think my taste has changed, still searching and enjoying what I consider "good music" in a completely subjective, at times elitist way 
One thing I've noticed as of late is diving back in to some jazz fusion and "world music" that I previously may not have listened as closely to, I think this may be a direct effect of an ABB void. Rather than listening to a related band, like TTB, Mule, or something new like Marcus, I've found myself listening to some random album from a band like Oregon that I haven't heard in 15 years. Perhaps it's the desire for something fresh to my ears, that isn't just the same old thing. I struggle getting in to music that I find real simple (ex. wave of Irish anthem rock) or without a lot of conviction.
Not really even being a fusion fanatic, I did go through this list after someone sent it over to me; again kept things on "musical edge" for me personally : https://digitaldreamdoor.com/pages/best_fusion_albums.html
Yes, quite a bit more Bluegrass...
Me too. I've become a big fan of Mandolin Orange. Had tickets to their last gig in town but had to miss it due to a family matter. Next time for sure!
