Don't hold your breath
I don't know how many batches I have brewed to be honest. I know it is more than 300 pretty easy. It is under 500. Let's just say 350 batches to be conservative.
350 batches x 8 six packs per batch = 2800 6 packs.
2800 6packs x $8 a sixer (avg. $$ over 18 years) = $22,400.
I am pretty damn certain I have spent well in excess of $22,000 on equipment + ingredients. No - I am positive I have spent more than that.
So, I have yet to break even, much less come out ahead.
That said - I get to make beer. There is no ROI for golfing, or fishing, or hunting or any other hobby either. No price can be put on countless hours of enjoyment and satisfaction. If you do put a price on "entertainment value" - I am WAYYYYY ahead.
I would have bought beer anyway. So, it is not like that money would have been sitting there in a pile today had I not brewed. More than likely I would have not only bought the beer, but drank it while participating in some other hobby that still cost that much money, plus the cost of the beer.
Once you do have you equipment in place - you can brew beer cheaper or at least break even when considering ingredients, and various odds and ends like buckets, tubing, etc. At least you can if you brew all-grain and buy in bulk.
But, like I said - I think an awful lot of us do it because we love the process and the satisfaction of making beer ourselves.