The answer to this question depends on many factors, and many times, these factors are décor based. If the colours look dated, or if you are a new resident and the colours are not your favourite, the home will get painted sooner or later.
NOTE: This blog is not meant to be about decorating and we will try to stay away from that. Moreover, we will talk about the walls in this post. Quite often, the doors, trim and ceilings are painted separately and we will cover that in a separate blog.