I have sailed across the Pacific Ocean and these are what contemplations I came up with halfway across:
Actually, when I started this journey I thought that the Pacific Crossing would be just an immense and endless amount of time to kill... Or what did you think? Well, I believed I would have time to develop my dormant artistic talents as a painter or musician, read tons of books and do some deep soul-searching! The truth is I haven't had the time for any of it!! My talents still go no further than toe nail-painting and singing in the shower; I only read one short story and this is all the philosophical bull-shit that I have managed to come up with during all these days of blue water...
The reason is simply Lack of Time!
I talked to other sailors who also find it difficult to explain to land crabs how come there just isn't that bucket load of endless amount of time to kill. First, most of that bucket load of time is actually wasted sleeping. In land crab-life too, mind you, just that here I notice it more since my sleep every day is divided into two sessions (9 pm - 4 am & 9 am - 11 am) because of the night watch.
Second, food takes a lot of time; keeping fresh tings up-dated, making yoghurt and cheese(!), trying to make the bananas not ripe all at once, peeling onions etc. On top of that, it is the usual preparing of meals and eating, which are important events aboard, as I am sure you've noticed.
Next is the sailing related stuff, which is also time consuming. This is not including steering since we mostly run the autopilot, which in the end makes hand-steering real exotic and fun every once in a while! Other sailing related stuff is off course trimming or changing sails, computer navigation, radio contact and checking weather forecasts.

Any additional time, after all these everyday chores have been full filled, is spent socializing; playing cards and games, talking and composing stupid songs - There will be a live-performance in Fatu Hiva that you are welcome to join! Other than that, what little time is left over, I pretend to read, write or contemplate about life. Considering I have only read one book so far (even since I started sailing!), and only write for my own amusement, (web pages and a bit of diary), I should have had plenty of time to come up with some Startling and New Philosophical Ideas! Mind you, I love night watches for this very reason - they are almost too short! At least definitely far too short to come up with the "Startling and New"-bit on that Philosophical stuff!
I talked to Ole, a Danish single-handler in his 70-s. He told me that the best thing about sailing alone is that there is no one around to interrupt your own thoughts! He said he thinks of his life and basically relives it, remembers things he thought were long gone, reflects and regrets... As for my self I have not yet had reached that undisturbed mental level or I didn't take enough drugs, but I am still hovering about in the usual "Who am I?", "What do I want with my life?" etc. So far, the publishing right of "The Ultimate Truth of Miss Wallengren" has not yet been claimed. However, after my next ocean crossing, maybe I will be able to publish "Wallengren's Perfect Theories on How to Save the World"! Or maybe I need to do some single-handling myself before that one becomes a best seller...
Other that that, the crossing itself was pure luxury in that fancy catamaran called Yelo! Fresh water showers every day, two large freezers filled with chicken and goat, which we had to finish on the way... We were super fast and reached the Marquesas in only 16 days! The norm tended to be 20-something days. We had such a nice time. It was almost too fast! However, now I have changed boats again, and am back on Gypsy Soul, but that is another story!

Updated June 28