I'm not going to talk to my mentally disabled uncle
Why won't you speak to your mentally disabled uncle?
My uncle's speeches are way too long.
You should practice being more tolerant and patient with people that have a mental impairment. Your family will not approve of your selfish behavior and may be angry at you as a result.
So I should talk to him like I care?
You should practice empathy and caring so that you can have a genuinely good relationship with him.