I love to hack the everyday. I don't like the status-quo of accepting inadequate tools. A key ring is something you use everyday, but its usability sorely lacks. Why settle for a bad design and annoying usability when you can buy a key ring that's incredibly well-engineered, with ease of use, made out of bulletproof buy-it-for-life materials?
This has been my key chain for years: KNOX Titanium Custom Split Key Chain. When I can replace something that I use everyday with something twice as good that will last forever, I do it immediately.
I actually think this is going to be more cost-effective in the long run, too. You will never replace this key chain. It's aircraft-grade titanium. This is a perfect example of the boots theory of economics.