I initially planned to use HE as a way to delay school start for my eldest (a fairly average child), because I don't like the idea of school for young children. To me it simply felt wrong. While early formal teaching gives a short-term boost to test scores, it seems to damage young kids' well-being and even their longer-term academic skills. For example, here's one controlled study indicating negative effects of a formal academic programme on four year olds: www.psychologytoday.com/intl/blog/freedom-learn/202201/research-reveals-long-term-harm-state-pre-k-program
Once we were doing home ed, I saw more and more advantages to it and never did feel the time was right for my child to start school after all. That one did try school for a term at the age of ten out of curiosity, and then decided to return to home education. They are now doing really well at university. I think they would have done okay at school, but home ed made for a happier childhood and more opportunities to enjoy a range of experiences. School most likely would have wrecked their fragile health when they developed CFS/ME at 15, a condition which was manageable in a home ed setting.
My other child is seven years younger and has a learning disability. By the time she arrived, I was well sold on home ed anyway. School would have been a particularly poor fit for her, so I never gave it serious consideration. I mean, just in terms of self-esteem alone, it seems a very damaging environment. She has a moderate learning disability and would have been mainstreamed. What would it be like for her to spend a thousand hours a year engaged in academic tasks in a roomful of kids who can all do things she can't, getting the message that academic performance is of more value than her other skills? All the kindness and targeted help in the world cannot fix the consequences of that.
Now she is 16, happy and confident and still learning at her own pace. She taught herself to read at 14 and now takes a keen interest in basic arithmetic. She enjoys woodworking and sports and learning about the world around her. She has many friends of various ages and abilities. A five year old at the bushcraft sessions where she volunteers follows her around like a puppy, knowing her to be fun and clever and helpful. Though she looks blank when her very bright teenaged friends try to discuss philosophy with her, they still have a good time together kicking a ball around, climbing trees, and playing online games in which they explode virtual worlds in silly ways. Home education has been the making of her.