I agree with every word of that, except the first line. My point is that OP cannot possibly know if owning pets will provide them the same satisfaction as having children because they've never had children.
No one here is actually disputing what I actually said, because what I actually said is correct. I made a statement, and everyone threw their strawman arguments at me.
Another strawman argument. I never said anything about biology. Adoptive parents are still parents. Your siblings are still your siblings.
It's still different than a child someone considers as "not theirs".
And btw you were a child, you weren't ready for that kind of responsibility and shouldn't have had to do those things, and I'm genuinely sorry that you had to experience that, and I'm glad your siblings had someone in their life to look out for them. I'm sure that made all the difference to them.