Oh, I absolutely agree - hardline tubing is BEAUTIFUL.
But you have to master the basics first, including knowing the noises of your gear well enough to know when it's telling you that it's having issues, and what a good seal feels like. The trouble with hardline is that it's very easy to get something that looks really close to what you need but has an angle that's just not quite right, and develops a very slow drip after a little while.
EDIT: (And I don't know if you care, but barbs+zip ties or clamps are significantly more secure than compression tubes. They're also a lot cheaper. I personally use 7/16" tubing and 1/2" barbs, running without clamps, for looks - making them about as secure as compression clamping.)