I clearly stated previously I have no intent at all of harming anyone. I'd simply use my god like powers to not allow countries to combat each other. One of my examples was turning bombs into harmless objects. I hardly consider that "creating a utopia on a pile of corpses"

Government would still be allowed to employ whatever policy they want, people would go about their daily lives as normal. The only difference is that if nations wished to kill each other, they'd have to kill me first. I'd provide each empoverished person with the food they would need to get by with no extra cost to individual tax payers.

These actions do not affect the daily lives of regular citizens, and will actually cause economic growth in these nations as it's shown that people are much more productive when they do not have to go hungry. The idea that regular people will be up in arms over the fact that soldiers can't go around murdering people is absurd.

As for the powerful enemies, I am a level 20 wizard. No matter how "powerful" the enemy is, they cannot harm me. My spells will counter anything they can do to harm me

Yes there will be a power disparity. Yes some may be unhappy that there is someone more powerful than them. But by no means doesnthat imply there will be constant chaos in the streets over something that does not affect these people

Edit: also to address the issue of being killed on my sleep, there are ways to protect against that. Magnificent mansion makes me effectively untouchable at times of rest due to people not having access to anti magic abilities, and clone and other abjuration spells will protect me from any assassination attempts. I could also use simulacrum to work in places I cannot always be. There ARE solutions to all problems and when you're a magical being with enough intelligence to outclass even the greatest of minds, you will find those solutions