something about STALKER

There's one thing (except from the undead living sneeker-russians and the random inconsequent respawning of enemies) that has been disturbing me - the "I'm hungry" warning. I'm forced to feed upon the 9million sausages I've got in my inventory whenever this warning pops up. Then in the middle of everything I get exhousted too, this usually happens NOT when I'm in gunfighs (which is when I allways get "hungry", wtf), but when I'm on my way to some dude I'm suppose to meet, or something -totally unmotivated. Now I get it, I'm fucking hungry but please in the middle of a fight?! And oh yeah of course I can get tired when walking a mile or two. And after I read A Red Letter Blog when he comments about that there is NO "watch" (or whatever), I started to think...If Im forced to eat when I'm hungry, then shouldent I really have to sleep sometime too, instead of taking short rests? I think that would be just as logical as being forced to eat.