I finally made the change...
...From Safari to Firefox as my main browser, and I feel really proud of myself.
I have been using Firefox for the marvellous www.stumbleupon.com add-on for several years now, while using my enormous cache of Safari bookmarks to hang out online. Tonight I figured out how to export these bookmarks to Firefox.
Simultaneously, I have been figuring out a few new and not-so-new features on this blog, which I feel proud of a little, but also a bit self-critical that I hadn't done it earlier.
I can only encourage others to make the change over to Firefox if they like the browser.
I actually prefer Safari aesthetically. Firefox hasn't the nice metallic sheen of Safari - but Firefox crashes less often.
No doubt I can alter the appearence of Firefox to suit my own tastes anyway. Now I just need to figure out how...