Oh, so you think wall to wall humanity would be utopia?
Besides, it's hysteria to say that we are in any danger of running out of space. If the world had a population density of Hong Kong, it wouldn't fill up Texas.
What a crock of shit.
Actually, it is. My mistake. We would all fit into Texas and California. Do the math.
The population density of Hong Kong is 6,480 per square kilometer. One square kilometer is equal to 0.386 square miles. Thus, with a population of 7 billion, there would need to be about 417,000 square miles to fit everyone into a city with the density of Hong Kong. The size of Texas is 267,000 square miles. California is 169,000. Combined, the two are about 436,000 square miles.
And no, I don't think it would be utopia. But it demonstrates that your hysteria about running out of space is overblown.