I wrote this blog post to inform the people I know who aren't as tech savvy or otherwise don't put any thought into their choice of browser. Another goal is to help get enough awareness on the topic and make sure it fails.
I can tell why I do. I used to use Firefox but had to move to Chromium long time ago for several reasons:
It was nicer on RAM on a very small machine I had at the time. I think Firefox got better in that sense since then.
Many web apps don't work quite well (or don't work at all) on anything but Chrome. That's a sin many lazy web developers make, and it forces their choice on the users.
To the second point, as a avid firefox user, I noticed that some Webapps seem to not depend on the Browser alone.
Even in safe mode, some Webapps sometimes work better on different systems than on others using the same Firefox version.
For instance youtube streaming seem to work better on my Linux laptop then on my Windows desktop, where it becomes stuttery. In Chromium there it works as well as Firefox on my Laptop.
What I want to say is that browsers and all the systems around this are very complicated. So your milage with the same browser will vary, and you might blame the wrong thing.