Homo sapiens evolved on this planet. We reached our first billion in 1800 but exploded to the second billion at about the time I was born in 1925. In just my lifetime, we have added 5 billion more people.
In nature, birth rate and death rate have to be equal or there are problems e.g., rabbits in Australia. We either need to increase the death rate or lower the birth rate; I prefer the latter.
Planned Parenthood and I urge vasectomies, tubal ligation and contraception ---- intrauterine devices, condoms, morning after pills, Plan B or even abstinence. All humans should be born planned, wanted and loved not unintended.