I have friends whose elder child is special needs. but the 2nd child turns out normal.
First of all, baby is a gift. Don't make this rash decision something you would regret.
Secondly, have you check on the possibility and rate of #2 being a special needs child due to genetic?
Yes now they may not need any playmates. Once they get older, they will need someone to confide to. Just like us adults, when things turns hard, we know we have family members we can count on. Silbings we can count on.
Give it a proper thought mummy.
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