Another point.

Cruising on a boat also has the aspect of leisure and pleasure, it is not something which is absolutely necessary. Those who will join the cruise will choose to do so for the sake of having a good time.
The analogue of this facet of the cruise adds another facet to the observance of Torah and mitzvos. For not only do we observe Torah and mitzvos because it is our lifesaver -- but we also find great pleasure in our Torah and mitzvos. This is the level of serving G-d out of love.
While this lesson is sound advice for all Jews, in all walks of life and at all times, it is especially appropriate to mull over these thoughts when one is actually participating in a cruise, for the novelty of the experience engenders a deeper contemplation on the intrinsic essence of the occurrence and the desire for satisfying meaning and purpose. More common phenomena, although they should be truly thought provoking, fail to arouse serious meditation, because of their regularity and commonness.
If one would contemplate on the return of his/her soul in the morning -- having gone to sleep tired and worn out to wake refreshed with the return of the soul -- he would recognize this happening as a gift of G-d who gives us life every morning. This thought should awaken a rush of love for the Holy One, Blessed be He. Remembering that this soul is pure and holy -- will enhance this feeling much more so. Yet, by its regularity and daily reoccurrence one is not impressed and is not moved by this wonder.

source: Essays: Navigating the Sea of Life