"Everything before 40 is research" I once heard, and every day, I find it to be more true.

I'm a great parent because it is what is necessary and my children had no choice or consent in existing, but I also tell anyone younger that unless they are absolutely sure they want kids and are ready for decades of suck, don't do it [1] [2] [3]. Live your best life, be true to yourself, find your passion and joy exploring and being curious; one can do this without children. If one needs kids to mature or become a better human, find a therapist first. Also, maturity is optional. You have to grow old, you don't have to grow up (take on responsibility unnecessary to take care of yourself, broadly speaking). Religious beliefs aside (potential reincarnation and whatnot), enjoy life, you only get one run through your part of the timeline. Don't waste it on the expectations or belief systems of others.

[1] (lack of support systems, both social and familial, ~$380k in 2025 dollars to raise a child 0-18 in the US not including daycare and college, etc; n=1, ymmv)

[2] Parents Under Pressure: The U.S. Surgeon General's Advisory on the Mental Health & Well-Being of Parents - https://www.hhs.gov/sites/default/files/parents-under-pressu... - 2024

[3] The American dream will cost you $5 million, report finds - https://www.axios.com/2025/09/22/the-american-dream-will-cos... - September 22nd, 2025

I would describe the age of 40 as the time when my brain truly started to function but unfortunately, I feel ashamed of that.