Well, then shit happened, nothing to be done about it. Either way even if he did die before finishing it, it doesn't negate the feelings of brick-shitting that you experienced when you first read it, does it?
Besides, what good would be weekly chapters of Berserk if they looked like shit, because he couldn't put in any effort any more. Or even better, why do you guys want so hard for it to be finished as soon as possible? Let's say it were to finish next month, then there would be probably the same guys who are alreday whining in the current thready, hust this time saying stuff like "Damn, it's already over. This sucks, I want moar. Oh, Miura should do Berserk 2, with new adventures of Guts", or some shit like that.
tl;dr Just enjoy the ride.