As long as there is Open Source and Mozilla, it will be my browser. I just installed it today and I love it. Having used Netscape since literally the beginning of the Web, and since it's based on Mozilla, I didn't think there was any reason to change. Well, Mozilla made the transition so smooth that I am impressed indeed.
Especially of interest is the ease at which all my pages are rendered... and perfectly! Also, the ease of use in disabling pop-ups: the first one I came across, Mozilla popped up a dialog asking me if I'd like to disable all pop-ups except for the sites I specify. Very nice. I'd like to see all you Internet Explorers try that with your browser.
Anyone who doesn't give Mozilla a try is just plain missing out. And why would anyone want to use Microsoft's product when there is a free, safe, and superior alternative?
Go ahead then, click the logo... I dare you.