When you reach a certain level and survival is no longer the only essential thing, then you start becoming aware of such concepts as culture, patriotism, prestige, among others. Then art assumes a very important place and can, in a sophisticated way, influence the opinion that other people have of you depending on your attitude towards art.
For instance, an expensive million-dollar yacht is certainly a beautiful and useful thing, but somewhere deep inside your brain it will be associated with a simple oar boat. The same goes for some super cars. It is also a useful thing, you can marvel at it for a short while, but then your associations will make a connection with a good old wheelbarrow.
A work of art simply exists, and it has no connection to anything you can really use. Its value exists in itself. It is an emotion. And emotions are at the foundations of all the decisions you make - rational reasoning comes later, after the decision has, in fact, already been made.
Art is what can influence and boost your prestige without a seemingly rational cause. And this is just one of ways how art improves lifes.
Don't hesitate to choose your piece of art here or here!