Originally Posted by
Hypno Toad
But just think of how fast you'll feel in the spring when you get back to your summer tires

This is exactly why I got started with winter riding, to keep my legs in shape for a touring trip. Riding knobbies on snow on an older bike is more work, even going slowly, and it really keeps your legs in good shape.
Added bonus is that it gives you good ski legs too.
win win win