I actually don't think you're stupid at all. Even if you have grammar like that of a child, or even if someone has dyslexia, down syndrome, autism, cerebral palsy, whatever... they still have valid ideas to contribute and deserve to live/lead a happy life with equal opportunity for education if they want it.
I think you're very intelligent but have a lot of fear. Don't worry, we all die, humanity surviving eternity isn't what matters. Based on how timid your response was to me calling you "little guy" and how you've reacted to other's posts, I think you're actually quite compassionate and level-headed. You're just terribly confused.
Right now, these people are just numbers. If you had to kill them yourself, I'm pretty sure you'd feel differently about eugenics. I know there's some good in your little heart, no matter how you try to come off.