Answer for 1st para is that is rare I think.
Not gay is abnormal but what they do is abnormal to me. Agree with las sentenc of first para. but again it's rare.
2nd Para
Both is same that is why no adoption by Islam.
Wait. Your justification for why there is no adoption in Islam is because the children may be raped? What about the high number of biological children that are raped or abused by their biological parents? According to you, Allah shouldn't allow that either.
P.S. a child is less likely to be abused by their adopted parents than a biological child is to be abused by their biological parent. Kind of throws your logic right out, doesn't it?