I have to totally agree with Shell here @Floopani
All I will add is that the Autistic person in me knew I was Autistic. My history and experiences proved it. The Autistic person in me researched it all, and it all fitted me to a t. I needed to know (I'm massively fact driven) and I also wanted to know as I wanted to understand myself better. I could write pages on this, but that's basically it in a nutshell.
I sometimes wonder (I'm also AuDHD, but driven more by the Autism) if the ADHD aspect makes some of us question and put off regarding assessment.
I do hope that makes sense.
For me, seeking assessment was a no brainer. I'd have driven myself mad wondering and not knowing, otherwise.
Also, a very wise Autistic woman on MN once said to me that being Schrodinger's Autistic is a horrible place to be. Asessment and diagnosis confirms either way and means you aren't in limbo. Again, I hope that makes sense.