OP, you won't get impartial advice on here - everyone will advise (or flame) based on their own life and experiences.
If your family are happy with your decision, go for it. All too soon the kids will be gone and then you can retrain or take a different direction in life.
I am basically a SAHM to teens - as someone said upthread, I mostly get the
reaction to that, but I volunteer 2 days a week and fit that round the kids, household, dogs etc. DH works ridiculous, unpredictable hours plus travel, and I have to be the one that drops everything when needed for doctors' appointments, sports fixtures that don't work in with the bus schedule, home deliveries, workmen in the house, you name it. Volunteering is keeping my skills up to date for when I want to work again once the kids have flown the nest.
I don't see myself as 'dependent' on him - if I didn't do what I do, he couldn't do the job he does and earn all the money to support us all - there is no way I could earn half what he does, so our arrangement suits all of us (most of the time). We are a team.
And before all the feminists start flapping - I pay myself a monthly 'salary' out of our joint bank account into my sole account, it rolls up nicely and is all mine - to lend, to give away, to spend or to save - DH knows all about it and it's my Escape Fund.
Do what feels right for you and bugger what anyone else thinks of you. This last part I'm finding easier as I approach 50 