I went back to school after my first child was born. It was something I had to do because I would have never forgiven myself for walking away half finished. I had all of my general coursework done, but I had two solid years of classes left. Going back as a mom and an older student was one of the best things I could have done. For one thing, I was there to learn and succeed...period. I never missed classes, I studied harder, and I made better use of my time than I had before. My motivation was a lot greater, too, because it was TOUGH being a mom in school. There was no way I was going to mess up or slack off and delay graduation any longer than necessary. One of the great things was that most (not all, but most) of my professors were easier to relate to and were more flexible with me when I needed them to be (I did NOT take advantage of this, but you know how it is when you have kids...things happen.).
Looking back, it amazes me that we managed to pull it off, but from the time my first child was born here's what we did: My husband and I both went to school full time, alternating our schedules and trading responsibility for our son, and my husband also worked. After the first year, we moved, transferring to a new/better school. We added summer semester work, again alternating classes so one of us would be home with our son. Then at the end of the summer, we found out we were expecting again. I knew then I HAD to finish that year or it was never going to happen. I took two very full semesters during the pregnancy, gave birth one week before exams in the spring, and graduated two weeks after having my second child. My husband graduated a year later. We both graduated with high GPA's, and even though I have not gone back to work, we have both made good use of our respective degrees. He uses his to support our family, I use my skill set to torture our kids with an overabundance of research when they ask a simple question and to trade with friends for things like piano lessons for my kids in exchange for my abilities, among other things.
Sorry, I know this is a very long response, but I can't stress how GLAD I am that I didn't wimp out. And believe me, there were times it would have been soooo easy. Like being 9 months pregnant standing at the bottom of the hill I had to climb to get to all of my classes and thinking, I am going to die if I have to walk up this hill ONE MORE TIME. Or having a sick toddler and a paper due. Or just the months and months and months of stress and anxiety which don't make for a happy mom or wife. It really takes a long term perspective, a lot of determination, and of course, it helps to have someone who loves you, supports you (emotionally), and believes in your ability to do it. But you can do it, and regardless of what you do (work-wise) later, you will never regret finishing, and you will be glad that you can tell your kids sometime in the future, I did it, you can too!