Sorry about your friend. Over the years I've seen my share of get offs, (Dirt and street) And I never thought of giving this up. I think your friend would want you to continue living a life full of happiness and adventure. If you're not feeling it right now thats understandable. Take a break and mix it up. My guess is you'll end up back in the saddle. Good luck.
SV1000s, 79GS750, DRZ400K, DRZ110
Sod Buster; "That job Sucks unless you have a monkey."