I know this is a venerable selling point of homebrewing, but in 14 years of brewing, I've never known it to be all that true. Especially now, with so many VERY GOOD breweries peppering the country. (Exceptions, of course, for places without good breweries nearby ... there are still, sadly, a few spots like that.)
I'll second that. There is so much really good beer available in the stores that it's hard to justify rolling your own on a monetary basis. If you just enjoy the process and like to work with your hands that's a different story, or if there's just no beer out there that you like and you think you can do better... well, sure. Maybe.
A lot of the really good stuff is about $10 for a 22 ouncer, though. If you can make the really really good stuff then I guess it's maybe worth it.
I've seen a couple guys make these really elaborate three pot setups that have temperature monitors and run on propane and are just amazing. It's a several-thousand-dollar investment, but it looks like a lot of the labor is done for you. If you did a grain-only setup with the three-pot stand and used corny kegs instead of bottles, well... that sounds pretty bitchin, actually.
I want one.