Anne, one of the problems I have with the kinds of classes and venues you describe is being restricted to using those facilities and resources within such a short window...ie, many community center activities only book the room for that one time-frame each week (usually only in the evenings), so if I want to use the resources any other time, I can't get in to the classroom or access the equipment/materials.

With a hobby center, I presume the "hobby gym" would be open most of the day and I'd be able to come and go at my convenience (rather than at someone else's convenience and schedule). That would work better for me, since I prefer to participate - and learn better - in the daytime.
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When you don't like a thing, change it.
If you can't change it, change the way you think about it.

(Maya Angelou)