A rather strange topic. I could understand it if you were criticizing the mechanics of prediction markets, there are indeed many problems there, ranging from the vague terms of the bets and the fact that the outcome is determined by a small group of people (who can make mistakes) to censorship (because of moralistic idiots, some markets are closed, for example, on death or nuclear war).
But your complaints are literally "I don't like the idea itself." Maybe if you don't like these services, you should just ignore them? Fixed games, manipulation, etc. have existed long before even bookmakers.
Would you like the idea of execution? I assume no.
Would you like the idea of war? Probably no either.
So when someone comes along and monetises murder, war, pestilence, death, suffering, failure, sorrow etc. Provides incentives directly or indirectly to scam each other based on manipulation or mere interference, why would there be an ethical way to do it? Some activities are bad from the getgo without any excuses.
Your mind reading attempts have failed. My answer in both cases is yes, I would. We are talking about forecasts, right?
Unfortunately, this is part of our world, and I see no reason why I can't analyze the
real fucking world and place bets. Because of those moralizing bastards? Let them focus on themselves and not encroach on my freedom.
For some reason, public debate focuses more on the "morality" of prediction markets than on the fucking state of affairs when countries wage criminal wars (USA, Russia, Israel, etc.).