People have been seeking pleasure since they were living in a cave.

Boredom thing also sounds completely baseless. I still remember when I was bored as a child - it had nothing to do with anxiety, frustration or anything like that (I didn't have any). Children (and then adults) simply have drive to do something interesting/enjoyable (for quite clear evolutionary reasons). I could stay for a couple of hours just relaxing in a forest, but only because I'm not so used to that. If I had to do that every day then I would get bored.

There are people who are trying to "distract away" themselves from their problems, but that's far from general boredom.