Not sure if I have it set up differently but mine is Cmd-Left or Cmd-Right to move to the beginning of a line...? Easier to reach than fn (I'm using a real wired BIG Apple keyboard, the RSI inducing one...)
Well, you don't have to follow that glossy mainstream. Just get yourself a new linux desktop with lots of RAM, couple of nice matte monitors, mouse and a good full size keyboard.
That's what I always do. My new PC should be delivered any minute, actually (16 GB RAM; at one intensive work session my current 8 GB where almost a bit scantly - is that the right English word?).
ctrl-arrow (which breaks with Lion's Spaces default keys), or shift Home/End in Terminal.
It's not that Macs are crappy, they just have different key bindings. I regularly work with Macs, Windows, and Linux for development and I've just learned to use the different key mappings.
I don't think I'm quite as proficient in any one system because of that, though. For example, I have avoided learning the Emacs key bindings for use in Mac/Terminal. (I don't want to try to remember TWO bindings for Mac, plus I learned vim first so usually avoid Emacs.)
ctrl-arrow jumps to the next word boundary under Linux.
Yes, other systems have other key bindings, but why do common things like jumping to the begin/end of a line need a key combination? And why aren't the characters written onto the keys? Every time I have to type some code on a Mac I have to press all the keys in order to find { } [ ] etc. At leas I learned not to quit the terminal when I want to enter a @ by now. Whose brilliant idea was that?