Product review (5 stars): The Grain Father makes brewing fun again.
I learned home brewing via extract method 15 years ago and it was a blast, but always a lot of work.  Living in Colorado, we are surrounded by hundreds of very good, craft beers.  And it became easier to just buy instead of making it due to the amount of effort with the stove top-extract method.  My belief was that all-grain was more work, and harder.
Buying the Grainfather proved that belief wrong.  Prior to GF brewing, I would spend a few hours cleaning and sanitizing everything.  In some cases scrubbing pots and pans, bottles, and kegs.  With the GF, I fill up with warm water, turn it on, add cleaner, and clean everything in one shot.  I run cleaner and sanitizer through the chiller, fermenters, while putting all the small equipment such as bubblers, stirrers, paddles, etc into the GF and heat it up to 180F.  Cleaning everything now only takes about 45 minutes to an hour.
Brewing with the Grainfather is also a lot easier, I need less equipment and brewing goes faster as it's all in one container, and the upside is that now I'm brewing all grain as opposed to expensive extract brewing.
Small batch brewing is a lot easier as well.  I'll brew 1, 1.5, and 2G small batches quickly so I can sample and play with a recipe as desired, and the Grainfather makes it fun again.