Motorcycling all year?

Hello together. Just to the background of my question: my wife and I have run 2 cars in our family. I drive 30 km daily to work with my golf. My wife works in the same place and can easily ride the route by bicycle. Purchases and other minor completions are done by the second car. We now consider abolishing a car. I would then be able to drive the motorcycle to work as often as possible. In the case of snow and ice, of course, I ride on 4 wheels. However, I would also be partly on the road. Of course, I would not like to expect my BMW r65 to do so. A r1150r would be intended for this purpose. Does the moped suffer from bad weather in winter or is it due to the corrosion like in the car? Are there good helmets, which do not fog in the cold and what is the situation with suitable clothing? With what insurance, tax I have to reckon about with the machine? The r65 costs almost nothing. It would be great if you could share your experiences and opinions with me. VG Markus