When DH and I were being assessed as prospective adoptive parents, we were subject to numerous assessments from professionals (we had to have medicals from our GP), professionals with varying degrees of ability and experience (one of the social workers was doing her very first adoption assessment; one should have left the profession ten years ago before becoming embittered), and lay people (the final stage was a panel of 12 people, including the council's medical advisor, senior social workers, an experienced adopter and various others).
Our assessment took nearly a year, and included discussion of our sex life, our childhoods, our relationships with our family and our friends, and a review of our parenting (we already had a birth child).
It was intrusive, lengthy, emotionally draining, and at times we both felt like giving up.
But, y'know, it's a necessary process to ensure that the right people get approved and people who wouldn't thrive as adoptive parents are weeded out of the system (or given help to address issues and invited to try again). Some prospective adopters have been told to lose weight before they can be approved (not morbidly obese, just overweight). Some have been refused because they disagree with SS's assessment of incidents that happened in their youth. And so on, and so on.