From over-population directly to extinction!
No down side!
I'm someone who ACTUALLY is an adoptee, adopted at birth.
If you're not an adoptee, you have NO CLUE how it feels to grow up as an adopted child.
When you're a kid, you hate anything that makes you feel different from the other kids.
As a kid, I grew up feeling different enough from the other kids because i was adopted as it was.
If I'd had homosexual adoptive parents, it would've just added MORE to the issue.
I'm sorry that was your experience, but I know adopted children who weren't/aren't similarly burdened. There's more to it than just being adopted.
That said, I do think that there is an unjustified risk of adding unnecessary drama to a child's life by placement in a same-sex parent household.