As for your bike, I am terribly sorry for your loss. I pray they get to experience what it is like to lose something they love. As with most CD70s, yours might be at shershah now being disassembled to be sold as spares.
My car was also broke in near Maskan Chowrangi and my expensive laptop was stolen which had years of my work and art. My father's 25 year old wallet, which was his gift to me, and quite sentimental, was also stolen. Nearly 40-60k worth of goods were stolen and I haven't been able to recover from it because it had the material I used to earn my living.
Guards don't give a damn about your bike, if robbers come most guards would run and save their lives instead, you know how our people have become. Happened twice that guard silently watch everything happening.
I know it stings but that's the price of living in Karachi. Next time either buy a chinese bike or replace the tank with a Chinese bike one.