Only four reasons? I could rattle off a dozen positive points in favour of adoption without trying, but I reckon it's safe to assume you're approaching this topic from another place of preaching and inflexibility where you won't even consider anybody's position that doesn't fit with your own.
So I'm going to save myself some time and energy, pretend I've already done the banging my head against a wall bit (saved myself that too and kept my peace), and imagine we've skipped straight to the part where you tell me to fuck off.
Oh! See, I've saved you some time and effort too!! You're welcome!! This could actually work, it's amazingly efficient... 🤔