For active bands, the artist makes (actual) money and I get a treat. Plus I like to look at the art.
Also, buying used records is a cool way to discover new older music without some algorithm shoving it down my throat.
I also just think they're neat. And I actually do treat albums like a thing to sit down and pay attention to with a record. Big album art is a plus.
And, with streaming you don't get to read the liner notes and the stuff the artist/liner writer wanted to say there.