it is just so enjoyable to build something you can use, and with the parts you want not just cookie cutter retail stuff. Not to mention how much cheaper you can build your own if you're not afraid of researching all of the parts yourself and finding reliable sources for parts. for instance, for me to buy a retail .300BLK with the parts i used it would have cost me around 1500.00 , but because i searched for the best deal on the parts , i was able to build it for less than half that cost...