Anyone who's had a couple of successes with home brewing will quickly grow tired of bottling 5 gal batches of beer and change over to kegging. Once you start kegging you want better and better ways to ease access to your 'food of the gods' as well as ways to show off your craft.
The Kegerator is something that's relatively easy and not too expensive to build. Especially if you already have the kegging hardware.
This is how I took a used chest freezer and made a custom beverage cooler and dispenser.
Steps 1&2 are for refurbing a freezer that is in bad shape. If you have a new one or one that's Aluminum lined just go to step 3.