Dear Professor Dawkins,
You are my hero, I really hope that I can meet you one day. Even though I am 21, my health is failing me due to a genetic mutation on chromosome 17 that resulted in neurofibromatosis type 1. It, essentially, makes it so I lack tumor suppression, and only will get worse with age. I have dozens upon dozens of these tumors, I have around half a dozen or more in my brain, and in other problematic locations. As a child I was religious, but I would question why, if the god I was told about was so loving, I had to put up with all the physical pain and psychological stress that this genetic disorder causes.
After several years of wondering this, I became an atheist. I just wanted to take the time to thank you for giving me the courage to tell my parents that I am an atheist, it took me many many years for me to be able to outright say it to them.
You really are my hero. Our time on earth is so brief, it is hard to make a lasting impact on the world, but I just wanted to thank you for the impact you made on my world.
I couldn't have done it without you.