In the congregation that we used to go to, and my parents and most of my relatives still do, very few had hobbies and interests other than being bound to the WTBTS.
Many made wine and brewed their own beer. Infact, all of my relatives are wine and beer makers. There are a few gardeners, but I'm hearing how they are trying to grow their own grapes and fruit so that they can make their own wine!
Apart from one other person, who was a bird breeder, in a cong about 20 miles away and two artists, I don't know of any one else who had a hobby that was worth talking about. Most people I know nowadays have some kind of hobby or interest that they actively pursue.
So....why don't JWs have hobbys other than making alcohol??