Let's not be silly. Firefox is fantastic. :)
However, I cannot say these feelings are foreign to me, and sadly they do not subside. For the past few years, I've been disillusioned by everything that is "Web 2.0". We have seen an endless stream of companies who all have a business plan approximated by, "Let's organize and present some bit of user-generated content in a slightly different way, get a ton of page views, and then get money from ads."
Boring. In 2001, I loved the concept. LiveJournal seemed to be the model to follow. MySpace was a disaster but was replaced by the then-application-free Facebook a few years later. CraigsList and Wikipedia had been around for years and to this day neither has not been displaced in brilliance.
Lately I feel as niches with wider potential audiences are being filled, new products are becoming less creative and more mundane echos of the truly unique and ground breaking ideas of yesteryear. Twitter? Virb? Brightkite? Sandy? Those aren't the "worst cases", just some sites that come to mind. Don't get me wrong, these products serve their niches, but I'm finding it difficult to get excited about subtle modifications of ideas I saw 5 years ago.
Have we moved into a phase of new technology for the sake of new technology, banking on bored office workers providing enough click-throughs without providing something that's actually useful and interesting? Simply producing fodder for LifeHacker and ValleyWag?
Maybe I'm just looking in the wrong places or maybe I've grown in such a way that things that used to interest me do not anymore, but I miss ideas and products that appear unique, interesting, and useful to me.