Just Be Nice
There are some people in this world that have such a sense of entitlement when it comes to people owing them things. A lot of times people ask other people things that are wildly inappropriate but think that they are entitled to this particular service.
Asking someone for a free piece of art because they live with their parents, doesn’t really make any sense. The art in question still holds the same value as it would if this person was paying their own rent. Sure, the world is unfair, but it isn’t this person’s issue.