At the moment mine are Prancercise and smoking.
On a more serious note I agree with the gender disparity. My STBEXH used to spend a fortune on his interests, and they were never Cheap pursuits. Diving, building remote controlled cars, cricket, motocross, drumkits. Always had to have the best gear, the best tools etc. Then a new hobby and set of equipment and requirements would begin.
So in the end i gradually ended up sacrificing my time and money to the family and the things I got joy from slowly disappeared. When I tried to take up an activity generally it was ridiculed and I lost confidence and stopped.
I'm moving in new DP soon and he's hankering after a workshop in my cellar. My stomach went into knots at first mention, but he's a different animal to my ex. And I give him the benefit of the doubt. He's very creative and likes to invent things from nothing.
When I suggested (almost as a test) I turn the box room into my study/office/art room he couldn't have been happier for me and said it was important for me to have somewhere to work and do things I enjoy.
Sad that I needed someone to tell me that but I'm very excited about the possibilities. Art for me was like meditation and therapy.