I do possess a sinister sense of humor. I came up with a scenario that if I could snap my finger, then I would sit back and enjoy the misery.
I would instantly remove all forms of electrical generation worldwide placing the world to pre-1870s. No communication, powered transportation, and refrigeration dominates the landscape. That being done, I would take into account the safety of aircraft in flight to land, submarines underwater to surface and head to port, nuclear reactors powered down, elevators in motion stop on a floor, ships at sea allowed to port, and any other safety measures taken including the return of people in space back to Earth.
With the snap, all people are returned to perfect health. All diseases, mental conditions, and limbs replaced plus any other smaller issues resolved. Hospitals, nursing homes, prisons and mental institutions are no longer needed. I'll get to why prisoners can be released shortly.
With people restored to perfect health, the snap will include an end to aging, people can't die, a person can't harm another person, people no longer need to eat or drink, all pregnant women will carry babies to childbirth, all infants and toddlers and children will grow to adulthood and stop, and no new pregnancies after the snap.
If a person tries to harm another person, then the attacking person experiences tremendous pain. This will stop stealing, rape, and murder. Prisons are not needed. Criminals are neutered.
This sounds like utopia. Many ways it is.
Ask yourself one question. How long will it be before people go mad?
The first 20 years will be celebrating. The next 30 years will be the new normal. Starting at 70 plus years after the snap, the human mind will become bored with no change.
Built into the snap, I would place a time limit that I only know. From the onset of people being in misery until the end of the time limit, that would be my perverse form of amusement.
People who spent decades jumping from high perches and not dying on impact and other death-defying acts, people not having to cook, people nit having to work a job, people never having to worry about safety, and people tired of living would one day find themselves back before the snap never knowing why this happened.
Once people started dying, stomachs began to growl, thirst reappeared, and pregnancies returned, humans will be rejoicing again. Then, the rebuilding of civilization begins. What new world would emerge?