Oh I'm sure you're doing a decent job and wax isn't a perfect solution for everyone. I'm just saying that one of the reasons you may only get 2k miles out of a chain is the degreaser takes away the factory oil. When I was on lube I was getting about 1% stretch per 1k miles, but it also depends a lot on the drivetrain and what kind of riding you do.

I would definitely consider wax though, especially if you move up into 10, 11, or 12 speed drivetrains. Everything is so damn expensive on them that wax is well worth the extra work, not just the chain but my cassettes look almost new still.