Sheepdog: I hear you. As much as I LOVE my leverguns, including the 30-30, if it came down to which gun am I taking out the door when it will be my only rifle is the Ruger Gunsite Scout Rifle. The advantage it has over the 336 is the cartridge - it gives a little higher top end - not that the 30-30 is lacking in any way, it's just that the 308 does a little bit more. It's only slightly heavier though not quite as handy to carry. It has good iron sights. The Ruger GSR also has the slight advantage in ruggedness.
The Ruger GSR is just one of those rifles you like to have in your collection because it can do so many things. There are better rifles to do specific tasks but there are few, if any, rifles that can do as much or are as adaptable. It is just a super platform, and Cooper was right, a rifle in capable hands makes and individual exponentially more formidable.