GN, and walking, Tai Chi and Pilates and my abiding interest for the last 40 years - archaeology, especially landscape archaeology. - fired by my, then, 4 year old son's interest in the subject, I did a part time certificate course when I was working and a further degree when I retired and am active in several local societies.
Both DH and I were agreed that we would never stop each other following subjects we were interested in. It did mean in the early years DH coming home on a Friday after a week or more overseas, to have me hand house and children to him Saturday am while I went off on a course, or he would come home as above and disappear off on a diving weekend the following day.