I actually am of Doyle's opinion as of the moment.
I roleplay, and I can do so frequently. I participate in the storyline.
But I, as a player, only do so because I find it fun. If I didn't find it fun, my character wouldn't be doing much of anything, would he?
Thus, i do fun things in the game. My character is then roleplayed doing those things, given certain motivations, background, context, etc. He interacts in the language and terminology of the universe. He expresses emotions, empathy, and anger in ways I, the player, do not.
However, I the player still have emotions, that shape my perception of 'fun', which in turn controls my character's actions. i steer away from things I don't view fun, like sovreignty or POS tower management. My character's motivations might simply be 'money', 'duty', or 'plans', but they're all under my control. He simply plays the tune to the rhythm I set out as the player.