I'm still in the last decade that nobody knows the name of - okay, I looked it up, and it's
Quinquagenarian.
Smaller batches are where it's at, for a variety of reasons, starting with consumption, then frequency/variety, and finally managing the physical aspect. Nothing says you have to brew so much beer at once. Ditch that mindset and set yourself free.
I brew all on one level in the house, which is key. The heaviest thing I have to lug up the stairs are full 2.5 gallon kegs. The heaviest thing I have to lift in my brew space is a 5 gallon plastic carboy of R.O. water (to pour it). That is actually a minor pain, and is my only physical challenge remaining to be solved. I suppose I could store the brewing water in 1 gallon jugs instead, but it's more stuff cluttering the room.