Would you use a patterned wallpaper?

Reader, I have a home question.

Would you use patterned wallpaper?

I'm curious. Sam and I are in the midst of decorating our home, and I'm really not sure how to proceed. I am typically a monochromatic decorator i.e. greys, blue, nudes etc. but for some reason I am really hankering after a nice faux brick wall or perhaps a bold pattern in our stairwell.

What do you think? Here are some fun options from around the web..

(1 & 2. House of Fraser, 2 & 3. I Love Wallpaper, 5. Go Wallpaper, 6. Etsy)

Can you imagine how striking a white room could look with the forth, geometric blue paper on one or three (!!) walls. I'm obsessed, but I wonder, am I brave enough?

First photo from The Room Edit.