I Have Autism, Aspergers Syndrome to Be Precise

I'm 31, autistic and still feel clueless sometimes. Some people say people in their 30s should have their shit together, and they're too old ti be clueless. No excuses. I do have my shit together but I can be clueless once in a while. I hate being autistic sometimes. Some people still talk to me like I'm five years old. Hello! I'm not five! I'm 31 for goodness sakes. I feel left out sometimes even in my own family but at least they talk to me. When my cousins around my age where I live go out and do something, I don't get invited. I asked if I can come. They act like they don't hear me. They would talk about in front of me. It sucks sometimes. It is who I am so what can you do?