I wish this were true for me as well... I said to the fear of rejection, "Fuck you" a long time ago, and so did women to me. =P
Lol, true you can experience rejection but lets say out of 10 girls you believe is very hot, if one says yes well, you are a winner. When I was in high school, I did not approach any girls believing all the ones I thought was beyond me would turn me down. When I went to college, I decided to just approach any girl that I thought was hot and give it a shot. The first thing I came away with is that when they shot me down, I really did not feel anything. Since I did not wait or moon over the girl where a rejection would crush me, I did not put anything emotional into it so it was all good.
What I found out is that when you let a girl know you are interested in them, you are always in the game. Sometimes things does not click right away but if you are a cool and do not take the rejection personally, you find out a lot of times that later on you will get your shot if you are still available. This happen to me a lot in college. I would ask this girl out, she would turn me down. Later during the semester when I see the girl I am always friendly but not that friend zone friendly. Usually after they go through a few a holes, you find out they start to seek you out or you might see them and say, "Hey you want to have dinner and Bam!" what was a no turns into a yes.
Anyway, if you never speak up or say anything what usually happens is that you start to build this emotional barrier where if the person says know when you finally get the nerve to ask them out, you become crushed. I found just getting in their quick and stating your ground fixes that issue and also can prepare you for success later.