I am glad to see that, so far at least, nobody has said they don't have art!
My day job for 30ish years was custom framing and I had my own shop for the last decade of that. We sold antiques and vintage as well as custom work and my own creations. Auctions, thrifting,
yard sales, wholesale buys, direct from artists and making my own stuff means we have hundreds of pieces of art. ( I'm including the unframed to get that high) I love art and believe everyone can get a bit more joy out of life with some art around.
It doesn't have to be expensive either. Got a quilt you like but don't use? Just sew a tube of fabric on one side or some tabs and hang it up! Put it on an outside wall and you've even got a bit of extra insulation. Thrift store frames may have some chips or ugly finishes but a bit of semi gloss black paint and they look way better. Print off your fave pictures and put them up. Much better than them just being on your phone or computer. If you love it, it deserves to be on your wall, even if it's just a poster you found at the dump.
I find a bare wall looks unfinished to me and I have been working through decorating our new house. Considering how much we have and like, I've been doing quite a lot of gallery walls.
This is one I did at our old place.