That is certainly true - but on the other side, if you do it too much (and kids/teenagers tend to overindulge in everything they find good), it can lead to unde

That is certainly true - but on the other side, if you do it too much (and kids/teenagers tend to overindulge in everything they find good), it can lead to under-development of important social skills, losing focus on actual studies/work, and in more extreme cases, complete disengagement from the real world. I've read tons of great 'escapist' books when I was a teenager (it all started with Lord of the Rings consumed ecstatically in 3 days of almost non-stop reading when I was 13). However, before I started doing that, I was really into technology/hacking/programming, and at the same time sports/social interactions. Then after a while, it was books/D&D/Magic the Gathering and almost nothing else. Of course, everything is good in moderation and harmful if you overindulge, but by its nature, escapist fiction is incredibly easy to get into and hard to get out.