Anecdata: I am 31 and have 3 young kids. They have 0 cousins and, on top of that, 0... second cousins? Cousins-once-removed? Whatever the one is for my cousin's kids. My kids are my grandma's only great-grandkids. And I have... 6 cousins. On top of that, at my last job, on my team of 15, I was the only one with kids, and only 1 of those 15 engineers were under the age of 30. At my current job, my team is 8, and again…
I couldn’t imagine bringing a child into this messed up world. I really feel we are at the beginning of a mass extinction and future generations, no matter how rich and well off physically, will be destined to a life of suffering.
Yes, because of you. Go have kids. Ethiopians continued to have children during a decade-long famine and their population still increased. Stop making excuses for your own selfishness.