The only real disadvantage of wall panelling is the fact that there is a slightly
limited choice of colours compared to some other forms of wall covering

The advantages of wall panels include:

Wipe clean surface
No grout to discolour
Warm to the touch
Inhibits condensation
Insulates the walls thermally
Insulates the walls accoustically
Little/no preparation of the walls required
Will not rot
Clean & easy to install