Should I just forget my dreams about being a mother because I’m autistic?

I’ve always dreamed of being a mommy and having a wonderful family. I know in the past I wasn’t so sure of wanting kids be around I didn’t want them to go though being autistic like I am. It’s been tough for me to find a man that will accept me. Autistic people always have trouble with relationships. I was diagnosed when I was eight. I’ve been with my brother for four years and he he’s been thinking about our future and he said the most heartbreaking think to me. He said he doesn’t want to have biological children anymore because I’m autistic. Plus our future children may end up being autistic and he doesn’t wanna to through it again. He has an autistic siblings that he delt with and she is a handful. He said, “I hate to crush your dreams but I don’t want children with you. I don’t want to have to start over since I’ve went though it with my autistic sister for a while. 17 years!” I told him he doesn’t know that, our future children may be neuroticism. He said it doesn’t matter because since I’m autistic chances are our child or children will be autistic so we should adopt instead.
That broke my heart so bad. Autism ruined my life. I told my parents about this. My dad bluntly said I should just break things off if he can’t accept me or future kids. My mom said I should have dates someone similar to me (autistic like I am).
What should I do?

Updates
9 mo
My boyfriend is a year older than his sister. He was 18 when he left home.
Should I just forget my dreams about being a mother because I’m autistic?
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