I agree with Thanatos) that roleplaying and immersion are two different things. But I also agree with Turija that roleplaying and immersion go hand in hand.

As I mentioned earlier roleplaying to me is simply creating a believable character and trying to play as that character. Immersion (eating, sleeping) can help us get into that role. We might consider immersion as a cRPG form of "method acting," a tool to help us get into our roleplaying.

Unlike many people on this forum, I don't need the world to react to me or reflect my choices. I have a vivid imagination. I make up my own stories. The Elder Scrolls games are, to me, a blank canvas upon which I paint my own pictures, a blank book in which I write my own stories. Dialog written by developers is never as well-written or interesting to me as the dialog I make up. The quests developers write are rarely as interesting to me as the quests I make up for myself.

More importantly, it is impossible for a developer to write dialog that adequately reflect my characters or their stories. The more specific the dialog, the greater the chance that it will not apply to my character. The more open-ended and non-specific a game is, the more room I have to create my own stories.

I agree with every word here

My characters eat, sleep, and stay at home or in buildings or inside when I leave them.
They wear clothes when in and when traveling in safe places, travel in armour, usually.
I don't like the inexplicable fur beds, I make sure they sleep on normal beds or bed rolls, if I can.

But if I have to get stuff done, I slam through it without roleplaying, sometimes.

I roleplay most of the time, but not to the point it interrupts my gaming.
All my characters are roleplayed.

I roleplay myself.

Counterintuitive? What I do is I forget that I'm playing a game and that I can get away with things - every action has it's consequences, and if I can clearly see that a choice has a bad consequence, I just don't take it. Even if it means part of the game's content is locked off to me. I make my own morality a part of my playing experience.

Ah, some characters I base upon myself (morally)

But usually I like to take different directions on the moral compass, as it allows me to experience different outcomes of different situations, therefor seeing how my different actions affect the world