I want every single human on this planet to vanish without a trace so that when I wake up the next day I am the only surviving human on this planet, trust me. I will be the happiest I have ever been if this actually happens.
What's missing in your life to make you not want anyone on the planet with you?
I'm a monster and this is what monsters do.
Wanting the population of the planet to die off so you don't have to deal with them points to a real mental disturbance in you. Find a counselor you can trust and let them help you work through your issues.
I bet I could be a psychologist and use this knowledge to ruin people's lives. But I would prefer it if all people would just vanish.
Usually people would be afraid to be the only person on the planet. I think you should talk to someone about these fantasies you have.