Good point! I hardly see boredom as a bad thing. Boredom is boring! Not necessarily bad. For starters, it means you have free time to do whatever. You just don't have things to do at the moment. Yeah boredom can feel bad but the opposite is far worse. Being busy is cool. Being too busy and not having time for the things you enjoy (or need!) the most is the real problem.
My dad's response would have been, "Use your brain and find something to do"
Most of us are busy doing a lot that doesn't bring much value to ourselves or anyone else.