While it boils down to personal choice, wall paper in general is sort of "out of style." These days people are more choosing to go back to paint finished walls.
I'll have to agree with Dan. Although styles change, on thing remains. Wall paper is subject to pealing and damage, especially in kitchens where high traffic and water exposure is prevalent. Many of my clients choose faux finishing as a safe alternative to paper. More durable and customizable.
While it boils down to personal choice, wall paper in general is sort of "out of style." These days people are more choosing to go back to paint finished walls.