Why does fear hold so many people back from the most amazing experiences in love?

Answer 1

Because the chance of being totally destroyed by the other person, is SO painful, that some tend to avoid the experience altogether, rather than run the risk of being hurt again.

Answer 2

Fear of the unknown is terrifying. To be in love with love, one must give in to the experience without having any expectations. This paralysing fear as sometimes is known disables your "independency" and stops you from facing love in its truest form!