I only use 4 low when I am pulling a heavy trailer through sloppy mud or need to blast through a rut. Chevy has an Auto 4wd function that works when in the event I find some soft ground concealed by grass, sometimes you just have immediately gun it and hope for the best, stooping or hesitating to pust the 4wd button can easily be the end of the road until you get pulled out. I have found the using my truck does not get as muddy when I use 4wd.

Yes I always have a heavy jerk strap handy