Experience: You don’t really ‘use’ other rooms in the same way you use the bathroom. While you will just sit in the living room, and just use the kitchen to lean on, the bathroom is somewhere that you go to wash and groom yourself, and this can be a very pleasant experience if you have the right bathroom. A great bathroom renovation can actually make your bathroom more like a spa and this can be highly invigorating and relaxing to use.
Age: Some people will renovate their bathrooms because they have to, and if you find that you are getting old and are no longer able to climb into the bath etc, then you might need to have a bathroom renovation in order to be able to wash yourself safely or to be able to use the bathroom at all. The same can be true for those who are disabled or injured, or if you just know someone who is. With things like a walk in shower you can help people wash without needing to climb into the bath, and likewise you can help in other ways too by adding rails and a less slippery floor