I’ve only ever had 6u 84hp, and I think I could only ever wrangle another 3u at most. I have a tiny home, and need to be smart about my GAS but after my old Electribe hoarding multi gear based setup, to have the eurorack as a nutty groovebox that can take me away in a tiny size, I would really be wasting cash by going bigger, and then I wouldn’t be able to go to other peoples places to jam with it.
There’s so much to be gained from having it light, portable, and immediate. Not to mention what @rdomain says about learning how to fly.
I can lust, and dream, but having the size limitation means I can be more discerning over what my setup truly needs, and that to me is super valuable.