On the question of "how much inconvenience" - I know this isn't any sort of an official thing, but the shorthand I use to determine Good/Neutral/Evil (and Lawful/Neutral/Chaotic) is - how far out of your way are you going to go, to act in a Good (or Evil, or whatever) way? If what you do only respects life when there's no threat to you, or when it's easy or convenient, that's not Good. That's Neutral. The border of "how much are you willing to stick your neck out" is pretty fuzzy. But if you make a habit of doing Good when it's hard, it's pretty likely that you're going to have a Good alignment. On the flip side of that, if you aren't willing to do Good even when it's as easy and convenient as can be, that's a pretty good indication that you're (at absolute best) on the border of Neutral and Evil. And depending on how egregious the consequences, that could very easily flip into Evil. That's what I was trying to get at, with the "oasis guy" example.