Had this for years.
My youngest is 17.
I shrug it off now with "it's our life choice".
Am very fortunate that hubby can see the huge benefit my being home brings to him, he told me just this weekend that if I wasn't as resourceful and as resiliant as I am he couldn't do his stressful job as well as he does.
If my family needed my income I'd go out to work, Hubby far exceeds what I could earn but we both rather like the flexibility that me being at home allows and I can easily fill my days and be productive.
I've a seasonal job (holiday let) which I adore, I take the dog with me and make a day of it. I play tennis all year round and do long walks with the dog. We've bought and renovated several properties that I've done the donkey work on while hubby was working. Our kitchen, bathroom and en-suite reno I organised myself, dealt with all the contractors.
My husband works away during the week but I'm so used to him travelling the world with work, the reason I gave up the idea of returning to work was cos his schedule was so demanding. We make time for family and each other on weekends and if I can sneak away for a few days up where he works.
What I'm facing now is that my mother isn't very well, I call in to see her every day to make her a hot meal, run her errands, take her to her doctor/hospital appointments, if I was working I have no idea how she'd manage.
Both my kids live with us. One of mine is driving and working the other is learning to drive (I take her out during the week, hubby on weekends) and she's in college.
We might have the opportunity to emigrate due to hubby's work over the coming years, as a family its huge decision. My working outside the home is so insignificant though I'm needed just as much by my family as when my kids were little.