I can understand the disappointment. It's helpful to always keep in mind that when it comes to discoveries, it's easy to hype ourselves up excessively. Recognize that the PR arms of scientific organizations and universities are also somewhat responsible.

I find it helpful to remember that any Big Announcement like definite signs of life or advanced alien civilizations or asteroids hurtling toward Earth wouldn't be in such a small-scale announcement. You'd have the President appearing on TV or something.