Short answer: I'm not sure.
I got a BA with a major in English and a minor in Geology. I didn't do anything with it for the first 7 or 8 years- I was a nanny for the last year of college and continued with that family after graduation, then got married and soon thereafter had a child of my own. I really enjoyed being a SAHM. Actually, it's not quite accurate to say I was a SAHM since I did work- I just worked at home, with them. I provided childcare from the time my first child was 7 months old until my second child was about a year old. At that point, I started freelance writing/editing, and that's what I've done ever since with the exception of 18 months that I was directly employed for one of the companies I've freelanced for.
I love what I do, and I love that I can do it from home. But it's not the most lucrative career and I don't always have work, so I don't know that I could support a family by myself doing this. And I do sometimes wonder what I could have done if I hadn't started my family right away. I briefly considered med school with the intention of becoming a dermatologist (which tends to be a good medical career for people who don't want to put EVERYTHING in their career- lucrative but with opportunities for part-time and so forth). I more extensively considered pursuing a PhD in English with the intention of becoming a college professor. But all things considered, I'm glad I had my children when I was young. I had energy to run around with them, and if all goes well I'll have an empty nest by the time I'm 50.