Actually not a coworker, but my boss. I am happy that he allows us to work at home for most of the time -the truth is, he could say that we have to go to the office every day, couldn't he! And I have to go there just once a week.
I feel more safe that I would if I went to the office every day. The risk of getting Covid is much smaller. And it is very important to me with my immune problems. I also can save money I would otherwise have to spend on fuel. I also save time.