Denim is integral to my style, in the form of jeans and jackets. I don't wear denim shirts. Where I used to wear jeans every day that I wasn't working (and would change into them after work, too), though, now that I'm not working, I find I am wearing other casual pants sometimes, too. So, it feels I am relying on jeans less often.
For most of the summer, I wear lighter weight, cropped styles of jeans, except during the occasional heat wave that hits once or twice a year. Then I wear a breezy dress or shorts, some of which are jeans shorts.
I have six denim jackets: white, beige, two blue, two black.
I try to keep my jeans capsule current, so that I feel stylish when I wear them. I do have one pair that I keep for non-style wear, like doing chores. That doesn't happen often--haha!--but I find it useful to have something around that doesn't force me to wear good hiking or workout gear for other sweaty, dirty work.
Like Helena, I'm feeling my old favorite jean jacket (AG Robyn) is on the small side; I have grown a bit, and the jacket fit on the small size back when I bought it. So I'm looking for a roomier one.