I consider HE at times - but I work FT and mine is the permenant pensionable job.
DD, 8, is very bright on some things, and has some SNs so can have difficulties at school. But she is also learning academically and socially there too.
So while we don't exactly HE, we do still do plenty of enrichment type activities at home. I use baking and cooking to work on extra maths concepts. She does a lot of science things (measuring, mixtures, wave motion) in the bath. I talk French at home (mostly english, but french for fun and to keep my own level up) and sometimes talk Irish as well. We have always read stories at nighttime, and it has been chapter books and series for a long time now. If she has been refusing to do her school reading homework (it's too easy and I did that book already last year!!), I make her read a few sections from the children's encyclopaedia we have instead (it's a basic one - but to keep her reading!). Walks on the beach are regular ways to take her down from a meltdown - by distraction in the rockpools. I do lots of nature stuff when we are at the beach, woodland, up a mountain etc. We do some music at home, and bring her to various different types of concerts. We did finance, economics and interest rates the other day talking about the post that came that day. We do a lot of civics talking about politics and democracy. We talk about feelings and emotions, and try to work on social skills and understanding the needs of others. We look at the globe to see where DH is travelling, or the au pairs are from, or other people are, and talk about what life is like in that part of the world. When we are bandaging up another (!) cut knee, we talk about how the body works, the blood system, immune system, we've done hormones for other things....and that's all apart from HE worksheets that we give her to do in bed - as a way to make her brain concentrate on 1 thing and stop the rest of it working, so she can sleep. Writing or maths ones usually.
There are loads of ways to teach a child and loads of things that will help her in life, but not get in the way of what the teachers are doing at school. Strengthening their foundations or getting to things that they may not get to until years later, having a greater appreciation of things, having time to work out the concepts when fewer asking and distracting.
And we are lucky that both DH and I are well educated, and can do that with DD. We have access to books at home and in the local library. DD loves the computer and will look up things that interest her. There are nature groups we can do events with, and plenty of other events of all sorts we can take advantage of (some free, some paid). We have the money to buy the books, and pay for outings. But we also have the interest to engage DD in discussion and tickle her interest about things too, so that she can explore the very varied and interesting world we live in.
I really hope this doesn't come across as a stealth boast or anything, cos that's not what it is supposed to be.