Homebrewing just to save money is retarded. You should think of it as a hobby, because you like beer, and still buy other people's beer, and want to learn more about beer and try your hand at it. This isn't a perfect analogy, but think about it like learning how to play guitar because you like music. Are you going to stop buying albums (inb4 "buying" and "wats an albuumm?") because you can make your own music? No. Are you actually making money on your amateur guitar skills? Probably not. That said, it's not really a big investment if you want to give it a try, but most people fizzle out after a dozen brews (though probably got their money's worth at that point) and never really brewed anything they'd order twice at a bar. Then again, other people really get into it and make their own shit that's good and print out labels and proudly give it out to their friends and those guys are pretty cool. Some of those guys go on to open up their own breweries.
tl;dr reddit is kind of correct on this point