Thanks, all, for your suggestions and advice.
Moving to Florida IS NOT an option. If I had my druthers, I'd move to New England! I am a native-born Floridian and lived there (in a couple of different places) for a total of 14-15 years. Nice place to visit ... wouldn't want to live there.
An earlier post nailed it - I do live in Northern Virginia (Fauquier). And while last winter was an exception regarding snowfall, you just never know. The Farmer's Almanac, or some such, is forecasting an icier winter this year although without as much snow. Still makes it tough to ride on these mostly rural, two-lane, shoulderless roads sometimes!
Cross-training is an option but I already run and kayak and hike and those take up 4-5 days of each week anyway. I'm running out of days! And I did do some serious snowshoeing last winter but usually we don't get enough snow depth to make that worthwhile unless I drive up to the mountains (which I do pretty often anyway). I think the trick is to figure out how to avoid working and just spend all my time outdoors. Retirement is still some time away ...