Parallels between Harold & Maude (1971) and Fight Club (1999)

I loved this movie! From the start of this movie, I could not stop - but drawing parallels between H & M and Fight Club. Here are a few:

1. Protagonists of both movies "have it all" in life but are looking for something different.
2. Both protagonists take refuge in alternative therapy / finding solace in other peoples times of trouble. e.g.Ed Norton goes to these group therapy sessions, Harold goes to funerals.
3. Both protagonists fake their own death. Harold - more for fun and Ed Norton to alter his life style.
4. Both have unconventional girl friends - who are reckless and not afraid of death. e.g. Marla is a heavy smoker, the scene in which she crosses the road (not afraid the car would hit her, etc.). Muade is a crazy stunt driver, etc.

I know the topics of both movies were quite different - but i thought there were certain parallels - that i've listed above.

Cheers!