Why would my family see me as “incapable”?

Just because I’m mentally disabled they think I will never marry never have kids or live a normal life but it’s so mild no one can notice. I actually can have kids and have a real relationship and be married one day I’m able to change for the better and control my impulses. Why would they think so differently? We talk about having kids in our family get together and completely ignore me when they talk about having kids and they say to their kids if my daughter were to become pregnant and if her nephew were to have kids completely ignoring the fact that I am able to marry and have children one day. What’s wrong with them and why are they so abelist?

Why would my family see me as “incapable”?
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