Skunk,
Not had to be rebuilt yet; seriously.
I wore them often and hard for a number of years hunting, in mud, snow and exposed to the elements. Mine have the old style lug soles, before the newer "bobbed" soles came out. I guess between getting really tired of the lugs filling up with mud and getting really heavy , having double knee surgery and just getting older, I wore my various LLBean boots more.
Chain tread soles ( or whatever LL calls them) don't pick up mud,lighter, the traction is good, feet stay warm, and one pair has the removable liner. My Danners can get too warm with the Thinsulate being so whatever tey are rated.
I had a pair of Kangaroo bird boots that were stolen , I really like those for bird hunting. I swore if I ever became rich I'd get a pair of Russell's handmade...some day perhaps.
In my environs here in the south we get snow, biggest has been 8" a few years ago. Ours is usually a 'wet" snow which means ice . Somewhere I have shoe tread chains. Once in awhile we get the "dry powder" type snow, no ice, so easier to get around.
For most folks around here the chain tread or bobbed is all they need. Walk 10 miles in mud with heavy boots, and it wears on you...do it with bad knees and you sound like a big bowl of Rice Krispy's . Bird dog kinda looks at you funny. Quail flush a bit earlier too.
Real active growing up, since dbl knee surgery back in '93 I'm better than ever, but I learned a lot more about good footwear and the effects on knees. Learned from some classes/rotation/ people and patients the imprtance of good footwear in regards to hip, back and spine as well. Diabetics and those with circulatory problems get a stern lesson too.