Roy didn't want to die in the ring. He made history winning the heavyweight title but that didn't really make him a heavyweight. Roy had to pick the right opponent to get the strap and then got the hell out of that division. The only fights he could've stood a chance were against small heavyweights like Ruiz, Tyson and Holyfield. Lennox was far too big/skilled and had too much reach. That fight would've ended ugly.
Look what happened to Steve Cunningham...