Yeah, we all don't.
Some opt for full public disclosure 100% of the time (usually with a good reason), some opt for full public disclosure in some cases (such as this one), and others opt only for "responsible" disclosure.
Honestly, it depends on your viewpoints and beliefs and, just like politics, abortions, and gun control, we all have our own opinions and no one is "right" all of the time.
As someone responsible for I-don't-know-how-many servers and network devices servicing thousands of customers, it certainly makes my life easier if I don't have to sit around worrying while I wait for patches for 0-day vulnerabilities. I've been on both sides of it, though, and I can understand why some people go the "full public disclosure" route (and I've done it myself at times).