All the usual reason, I figure it would be much more convenient to drive when the conditions are on the edge. Wouldn’t have to constantly shifting in and out of 4wd.
I never shift mine in and out ( command trac )
A really good set of tires that are snow rated will make a ton of difference
For example on my 04 with 265-75-16 Duratracs I went through snow that had ice underneath and was 8-10 inches on the roads in two wheel drive . Over 140 miles and never used 4 wheel drive at all.
I mean it maybe nice to put it in 4 high in September and leave it till Aprril, but I see no need.
Tires and actually knowing how to drive in those conditions is way more useful than 4 wheel locked in 100 per cent of the time
Of course I grew up before everyone had a 4 WD, and people around here still call vehicles with full time 4WD/ ALL Wheel Drive City cars