I just joined today too so...hi :D Anyway I see what you're saying but the speed you can go in to a full run at is very necessary for running away from people. I'm not sure if you've encountered it yet but a lot of a**holes stand around spawn points shooting people who've just spawned, can't really defend yourself with a flashlight so if they could run as fast as you it would be terrible. Once you experience people doing this more you'll probably not care, it's the only defence you have. As for why the character can run so fast and seemingly forever, not sure if it's ever been explained but I chalk it up to your character being a soldier. Makes sense, the average person doesn't know how to use guns effectively, perform first aid, craft things like a splint or backpack and aren't nearly as fit as a soldier. There's no kind of "plot" to the game per se but I think it should be stated that you're a soldier of some sort. Something thats a bit...I don't know about running is that so long as there's one guy if you don't have weapons and they do you can run up to them and beat them up quite easily because they simply can't aim at you fast enough in close quarters. It's a bit crap but again it gives new spawners a chance so I'm not sure where they should go with that. Because you don't want it to be easy for bandits to kill people but at the same time need it to be easier to deal with them so for now I think the running system works.