Another adopter here. The 'noble act' trope is not helpful to us or our children; we are not saintly and should not be expected to be so, our children should not be told they are lucky.
There is a big gap between the images of adoption you see in National Adoption Week and the reality. As soon as you sign up to be assessed for adoption, you are continuously told, we are not here for you, we are here for the children. You are told to expect trauma as standard, that 'normal' parenting won't cut it, and that you should abandon all hope of normal happy family life.
If you don't take fright at this and go on to adopt, you will discover that the promised post-adoption support is threadbare, that most schools are ignorant of the needs of adopted children, and that other parents can be shockingly mean about our kids.
15 years in, I can tell you my dd is wonderful but raising her has been more challenging and exhausting than anything I have ever done (including raising my biological child). I have spent years fighting for support for her, largely unsuccessfully. I have done this as a single parent and it has been messy and tough.
Being told that I'm not noble and probably adopted for selfish reasons makes me laugh (rather hollowly). Of course I'm not noble, but trust me I don't get treated as though I am. I think that adopters, like nurses, like mothers, get told we're angels just enough to make society feel good about our low value in practice and the lack of proper support. It's like banging saucepans during Covid. It's no substitute for funding the services that our children need so badly.