One of my main reasons for staying with Firefox is that in the long term, I think it's good to have a diversity in browser engines.

Back when I started web development, there were standards, but nearly everybody just coded to what Internet Explorer supported. Which I really hated :-)

In the past few years, I've seen the occasional "works best with Chrome" website, which worries me, but so far it hasn't been too bad.

But if we as a community leave the browser market to Chrome and browsers with engines of similar origin as Chrome's, we'll get back to the bad old days.