No, to the point where I've had a few friends and family members offer to buy me decorations (or they'll text me of ones on sale), and I always turn them down.

Halloween, I'll put out a pumpkin if I'm feeling frisky, but that's about it. Christmas, I've considered getting a tree, and had a roommate that had a really small plastic one with two ornaments that'd we'd put out.

But they're too expensive, they're too much work to put up/take down (especially outside in the snow), they take up too much room both while in use and in storage, my dog would probably fuck with them or be afraid of them (Halloween), they drive electricity use and cost up, they can be stolen, they can increase fire risk, I normally live alone so it'd only be for my dog and I, the list goes on.

I tell friends/family, particularly for Christmas since many of them can't believe I just don't do decorations, that I draw a Christmas tree on a piece of paper and tape it to my wall every year. Costs $0.05 in ink, paper, and tape, and 5 minutes to put up and take down. Easily movable, lightweight, efficient.