I've worked at home for over 20 years, easy to sneak in lunch time bike rides. But, when I worked in an office, I was able to do so at some jobs (the onces with a shower/locker room and cultures where lots of people exercised at lunch) once or twice per week.
For a few years I bike commuted and tried to do so in the winter when there was no precipitation in the forecast. I bought a pair of Sealskinz socks that kept my feet toasty - too warm for me it turns out, but my feet almost never feel cold.
I did not like biking in the dark on the roads I had to use to get to work, so stopped commuting once the clocks changed. For weekend biking, I've found that those socks are too warm for me - I pretty much found I don't enjoy biking around freezing or below and my feet are fine with regular socks down to that point, too warm with the those socks on.