I am sorry that you want children and "can't" have them. I am sure you would be a wonderful foster mother to a poor child. But that's not for evryone.
There's a song by the Pretenders called "Middle of the Road". Have you ever heard it? Its on you tube.
This developmental chart of what you are supposed to be and do is just something someone in academics wrote up. Everyone's circumstances are so different and every person is unique.
You are not the cookie cutter mold of a human being. I find joy in that. I think its not good to compare ourselves to other people. Everyone has their own path to take.
What are you studying in school?

I am 41, no kids, never been married, no job, no money, and I was homeless till just a few months ago.... But I now have learned that my life is worth living , I have been so misled and abused, I think we all have some hurdles to jump and there is no time limit to get to where we are going.... depression puts a roadblock in the "normal" stuff... Who cares... Take your time...

Hey Bragacutie, Maybe this will help you. At age 12, I began DAILY SUBSTANCE ABUSE, that continued on a daily basis for the next 15 years, until about age 27. At age 7 i was diagnosed with ADHD. I always had issues with comprehension, understanding and concentrating and being bored very fast. I always struggled with anxiety, depression and agoraphobia.
I never got proper education and/or any skills, ( trade, profession, livelihood, career skills ). I PAINFULLY worked at over 40 unskilled poverty paying full time jobs i never wanted, since age 15 in 1975. Now age 57 with no financially self supporting skils. And no money. No idea how or why i endured and survived and PAINFULLY worked at over 40 unskilled poverty paying jobs since age 15, beginning right after my dad passed in 1975.
...I did not even know about or even understand the possibilities or options or what the meaning of these words were, "trade, profession, livelihood, career, self supporting income producing skills. Or how to save or invest money for the future. These most important foundational issues were never explained to me by anyone.
I have been single and living in my moms 2nd floor one bedroom apartment since 2006.

Life is not a textbook
You see life is life.
You can write about it in a text book.
but life is strife,
Its changes, in luck, in mood, in circumstances,
in yourself,
in other people, the hidden, the surprise,
its when the road turns when you were going in another direction
but you have to take the detour
like Christopher Columbus thinking the world is flat
and discovering the New World
its being stuck in traffic and running out of gas,
or flying at the speed of light in a space ship
, Its fires, its floods,
and volcanic eruptions
that turn your house into molten ash and swallows the highway
its winning a lottery, or being scratched out
its lies and cheating, and truths be told
votes and taxes, and hunting for gold
,
Life is not a textbook. so beware!

If you live it that way your gona get old.

ha ha.

Love Syl

Throw out those outdated books with those milestones.... life styles have changed and continue to change at blurring speeds....everyone is on their own path in life... instead just ask yourself to do the best you can and let things happen as they will.... yes we all make mistakes, yes we all fail at times but that’s how we learn.....and if you’re anything like me, you’re learning the hard way all the time.