Slightly off topic but from my own observations it seems that the majority of enjoyment of a vacation comes from telling (read: boasting to) others about it, trip reports, showing pictures to people, Facebook status updates, instagramming, family and friends knowing that you are on vacation when they are at work, trip reports etc.. This is especially true when using miles to fly first class and staying in expensive hotels.
This is pretty depressing because it means there isn't so much that's inherently enjoyable about the trip itself other than telling people about it.
If you have any doubts about this try going on an all out first class vacation and not telling a soul. No picture sharing etc..
You may be surprised to see how little you care about it all.