ET3D: When I really get into a game, when I'm immersed, I don't remember to save (you have to break immersion to save).
Breja: Really? That was never a problem for me. It's like saying "you have to break immersion to click", after all the character in the game does not click on things or people, or have active pause, or could never possibly carry all the stuff you've got in the inventory, or whatever other features the game has. If a game is really immersive, you just don't think about such stuff.
Well, I can see it, I think. If you're clicking to attack, then the click becomes part of the game. It's not "I need to click to attack... *click*", but rather "Die, orc scum *click*". For saving, you have to get out of the "game action logic" and remember to do it. It's outside the action. It's "OK, orc scum, time to die... But first, let's save in case he bashes my face in *F5*... OK, now you die!"
I'm an old coot, so I'm used to manual saving, but it still happens to me. That magical "Oh, shit! My last save is THERE?" moment ^^