As beauty is in the eye of the beholder, the experience of beauty is completely subjective. This reminds me of the kid from American Beauty, who touts his video of a plastic bag as being the most beautiful thing he has ever recorded.
So, as we each experience these fleeting moments of beauty, their only chance at longevity resides in the minds of each of us who take the time to ascribe to them that quality.
This is why it is not only recommended that we "stop and smell the roses," it is absolutely critical and vital to do so. Without these moments of communion with God, our minds are left to sift through the messages others are providing too readily with agendas of their own.
If you want a catalogue of beautiful things and moments from which to draw joy, take an active role in filling your mind with them. This is your only hope for a life of beauty.