I sold an SKS and a Taurus PT 101P, both mostly because I bought them on a whim and just didn't really care for either. (plus needed the money)
Any I've received from family or had since childhood, it would be very hard for me to part with them, but I've learned to never say never about anything.
Just remember, when you pull the trigger, the bullets come out going very, very fast. So make sure to keep the weapon pointing away from you.