LOVE: 
 

-Synonyms

1.  tenderness, fondness, predilection, warmth, passion, adoration. 1, 2. Love, affection, devotion  all mean a deep and enduring emotional regard, usually for another person. Love  may apply to various kinds of regard: the charity of the Creator, reverent adoration toward God or toward a person, the relation of parent and child, the regard of friends for each other, romantic feelings for another person, etc. Affection  is a fondness for others that is enduring and tender, but calm. Devotion  is an intense love and steadfast, enduring loyalty to a person; it may also imply consecration to a cause. 2.  liking, inclination, regard, friendliness. 15.  like. 16.  adore, adulate, worship.

(from dictionary.com)

It makes the roller coaster of life
 

exciting, worthwhile, and wonderful.