Boredom, some existential philosophers have posited, is an inherent part of human existence. We seek pleasure (or relief from pain) and, when we have achieved it, become "bored." We seek more pleasure. Schopenhauer called this the fundamental flaw in the universe. We are constantly seeking satisfaction and it is constantly eluding us.
Something to consider.
I, for one, find boredom almost completely intolerable and it has led me to my addictions.