Goth? No, not really...
I don't see how this is "goth". It's your veiw on how society/reality is, and it happens to be a bit morbid. But, it's close to the truth, it's not just about being forced to be happy. No, I see the "smile" thing as a metaphor for pressure. Peer pressure, media pressure, it happens thoughout all of the world. On the first day of preschool you meet other kids, instanly pushing away those who do not agree with you, and forcing others to agree with you (not for all, but for many). I also liked the sex thing at the end. It made me laugh even though the movie was kinda depressing. I know for a fact that I'll look out for more movies by you.