Similarly, he might choose not to have children, and be content that friends/family/humanity was having kids still, so no big moral harm done. If nobody was doing so though - wtf? Big moral harm by inaction there. Similar if we just have all these tools but never ever use them to uplift another species.
> I did [killed all the kids I haven't had] and I find it acceptable.
Don't you think it's a self-contradiction? There's 0 evidence to support valuing hypothetical descendants of these monkeys over hypothetical descendants of your children.
Secondarily, I value some sort of backup intelligence system as a protection against human intelligence monoculture. Though one could reasonably argue that adding a human brain-fold gene to a monkey does make it more human-like than truly independent.
I suppose I'm hoping that we get better at this and eventually are capable of uplift that yields not necessarily human-style intelligence.
I don't subscribe to an absolutist view of the veil of ignorance. My life is, to me, of higher utility than yours or the random children who I actively choose to let die daily.
So I'm going to act in a manner that preserves my life. That seems natural, after all. The other day I bought a new phone instead of saving a child's life. I don't even like this Pixel 5 that much. I like my life very much. Think about how many kids I'd kill for that.
By that logic you killed all the kids you could have made when you weren't having sex.