Hi maninorbit, Welcome to Wrong Planet.
You wrote, "I was always a "weird kid" growing up but I first realised I might be autistic when I was 14 and talking to an online friend who was diagnosed."
Let me try and explain a little here from my perspective. The human brain has two sides, one on the left side of the skull and the other on the right side. They are different brains. Normally, the left side becomes the dominant brain and the right side becomes the support brain. As a child under around age 12 both our brains are active during the daytime. But after that age, the two sides separate and the right side becomes the brain that is primarily active during our sleep.
Now here is the important part. Some of us die before we reach this age. Our left side of our brain dies and the right side come on line and takes its place. But it is a very different brain. It is like we are living on the Wrong Planet. In my case, I died when I was around age 3 or 4. I was attacked by a large bull and I died and experienced what is know as a Near Death Experience. My left brain came online a few hours after the incident and I stood next to my dead body. I made the decision to live and at age 76, I am still here. Life was fine as a child. I was a little different but most children accepted me. In a way I was a little like Peter Pan. But then around age 11 or 12, my whole world ended and I was attacked by the other kids in school both physically and mentally for 3 years. They tried to break me but in the end they discovered they couldn't so they fled away.
So welcome to Wrong Planet. You have a skill set, a unique skill set that other people do not have. It gives you certain advantages in life. Some of us have very high I.Q.s. Many of us are artist, musicians, poets, writers, scientist, doctors, and great thinkers.