It's crazy I'm 33 and spend more time in my back yard in the garden then my 75 year old neighbor. It helps me relax.
You are not crazy.  Many people find gardening relaxing.  Myself included
I'm not even sure why I enjoy it. Maybe because it's outside maybe because I can escape in my own head. Who knows. Do you have a big garden? 
No, it is pretty small.  I just grow some various root veggies and a few leaf veggies.