I don't want to have children with autism.
That seems serious. Why do you say that? Do you dislike them?
Because they remind me of an autistic kid in my school when I was still young.
I understand you want your child to be healthy but if they have autism they should still be loved. They still have a lot to contribute to the world.
I'd rather abort them. My child shouldn't have autism because I can't handle that.
You might not be able to tell before  you have a child whether it is autistic to have an abortion. So the chances are that you might have a child with autism, you should do more research to learn more about autism and stop being against people with those mental disabilities.