I'm impressed with how you keep so many in such a small area. Wait until "middle-aged retiree" becomes "grandmother to rambunctious children" and see how it goes!
I don't have half as many orchids as you do, but find I need to limit myself these days because there just aren't enough hours in the day. Even things I enjoy (and which I can find myself becoming obsessive about) need to be taken in moderation. It's a hard lesson, and I sometimes have to stop and remind myself to slow down so I can enjoy what I am doing at the time.
Some day, this middle-ager will be a retiree, too!