"I wish that people didn't wear clothes, and don't have to: humans are completely comfortable at every temperature that occurs on Earth." Of course, then there was the trouble of ugly, old people. "Also, humans no longer age normally - When we turn 16, we start aging at a rate of only 2 years a decade." Population crisis? "We still die at around 100 years old, but physically, we stay young and beautiful until then. And everyone is utterly beautiful, even for their youth.
"As well as going naked in public, people have sex in public as well. People have sex with anyone, not just their partners. STDs don't exist, and sex only results in pregnancy when both partners want it to." That should bring the population down to normal, considering peoples extended lifespans. "While sex does create some feelings of affection, it has no association with romantic attachment, and sex always feels amazing, regardless of who you're having it with - it's perfectly normal to have sex with a complete stranger. As such, sex is a normal part of social interaction, like shaking hands. The only reason anyone ever says no to sex is if they don't have the time - the world will change so that there are no other reasons not to have it."
Josh tried to think of any problems - if people were having sex this much, would people still have the time to get anything done? "Also, people only need to sleep one or two hours a day, and having sex will restore anyone to full mental, physical, and sexual stamina." That should keep everyone productive, as well as constantly fucking.
He tried to think of anything else he should add... Just one thing: "Even by the standards of this new world, I will be extraordinarily attractive."
He uncrossed his fingers as the world began to change around him...