People think adoption's raising a healthy baby they didn't give birth to, and that's the only, small, difference adoption can claim from standard family life. Ignorance is bliss, isn't it.
This 'you're a special baby cos you came from star-crossed lovers and I chose you' scenario was the case for centuries until the 1960s. Adoption was common - I have friends of 50 who were adopted, and two friends' mothers who gave up their first babies. It couldn't be more different now - and not in a good way.
After abortion was legalised in the late 60s, the adoptee pool changed from newborns to sibling groups of traumatised children. The bar for child removal from birth parents is very, very high and their trauma reflects that.
Mothers have the children taken away for drugs or paedophilia now - women don't give a love child up. Any other kids tend to be whipped away in a group. In terms of the men or fathers, they're usually violent or absent; unfortunately never both. Throw in addiction, often from several generations, including the baby, in and you've only just started on the problems.
As a finale, the genetic relations usually find the child on FB and try and get them back, often successfully. The only people I know under 50 who were adopted have several parents each thanks to FB, although this number is declining cos bioparents like these don't make old bones.
At no point in the past 50 years has Child Services attempted to restructure or improve a system that doesn't work for either the children or adults in it. To put it politely.
A lot of adoptees need what is euphemistically referred to as 'therapeutic parenting' - specialist psych help 24/7. But the UK doesn't do psych hospital for children - not a single suitable hospital exists in this country. There aren't enough specialist beds in adult hospitals either - 87 compared to 1200 potential patients.
People who get passed for adoption are not trained at all. Ruthlessly screened, yes; trained for 5 min, no. It's bonkers, and certainly why so many adoptions fail ie the DC is sent back into care.