In that specific situation, when going to an island never explored before, if you haven't saved at some point recently that's kind of your fault. Wanting the game to auto save for you before any and every conversation is a bit much. At that point, you might as well make it so you can see every dialogue path before you choose an option. Would save time from constant reloads. It would also absolve player of any responsibility for his/her choices, since you would always know what every outcome will be. I'm sticking by my previous post. If you want to save every few steps you take, by all means go ahead. But the game shouldn't do it for you.
