I think that these are both the worst two ways to die, but I think drowning.
Because it must be horrible feeling yourself going down and gradually, slowly dying. Whereas, although burning would happen slowly, i think that the actual death would actually happen quite quickly. Not that I'd know though.
I'm scared of the open ocean, but I'm also incredibly scared of fire, after an incident with a candle when I was 7.
I've heard that from studies that scientists have done, drowning is like falling asleep because the oxygen can't reach your lungs, let alone the rest of your body, so toi start to fall into a coma. They conducted these tests on animaux though, so...yeah. Burning would hurt a lot worse though, obviously.
Well, I was about to drown one day, and it's not painful. First, toi feel a panic, but then toi just stop breathing slowly, your moviments are slowed and toi have a calm death without any hurt (I didn't die!). Burning is plus painful. toi feel your body heating and your flesh burning. At least I think it's like that. If I had to choise, I would pick "Drowning".
BTW, I dream about burning lots of times. And it's always painful!
Really, it would be burning. From the many crime dramas I've watched, the people who run around screaming while on feu look to be in plus pain than those who briefly struggle for air before losing conciousness and dying.
Drowning. If I were burning on a stake, per se, I'd go from wanting to get the hell away from it to gripping it and wanting to stay near it. Drowning can make toi feel numb and make toi go unconcious, and if toi go unconcious then toi won't be able to see the ones toi love. At least burning on a stake toi could see them and know that they're okay.
Actually, personal experience has nothing to do with it so most of your réponses are invalid. Burning is not the most painful way to die because yes, it does hurt, but after your nerves have been burned through (which I doubt has happened to most of the ones who decided to answer this question) toi can no longer feel any pain. With drowning, toi can feel every drop of water entering your lungs replacing the air that was once there. Your lungs become crushed and there is literally no way to breathe. (which I also doubt has happened to most of the people answering this question-otherwise toi wouldn't exactly be answering.)