I get that side of it too, but I absolutely love brewing small batches. I have all the gear to do up to 5 but I very rarely brew anything over 2.5 gallons. 2 Main reasons
1. Is I just don't need that much beer. I really don't want 50 of the same beer. But that's just my situation. I don't drink a ton and I don't have a bunch of people around readily to share it with. 10 bottles will last me a month.
2. Easiness and variety. Variety is way more important to me than quantity. Even commercial stuff I rarely buy the same beer more than once or twice. I'd rather try something new. Doing 1 gal all grain batches I can keep everything in my kitchen , easily brew on weeknights, do multiple brew days in an afternoon, and could even run multiple mashes simultaneously on my stove top. Small batch starts to get pretty cheap too when a 1oz bag of hops lasts multiple batches, and you're only using half a yeast pack, even less if you reuse.
I dunno, sorry didn't mean to sound preachy. Great thing about the brewing hobby is it's certainly scalable and everyone can get into in by whatever means they find best.