Can’t decide: panel, wallpaper, or paint for wall?

I’m redoing the walls in my place and I’m stuck between three options: wood paneling, wallpaper, or just painting them. I like the idea of wood because it feels warm and kind of cozy, but I’m not sure if it’ll feel too heavy or dated. Wallpaper is fun, but I’m worried I’ll get tired of the pattern. And paint is the safest, but maybe a bit boring? If you’ve tried any of these, how did it turn out? What would you go for if you were starting from scratch? Photos, opinions, regrets — all welcome. #wall