My children are still both young, but old enough to be left alone for short periods of time -- ages 10 & 13. However, most everything I do, whether it be work, cycling, home chores, or the many other small stuff that needs to be done, I do when they are in school or at some other activity. So, I don't do long rides, unless it is a weekend and my DH is around, or I don't need to work that day and can get in a longer ride while they are at school. My average ride is 1.5 - 2 hours ... tops!
As for work, I work a part-time job -- I gave up a paying fast track career when I had children. I feel the value of my children outweigh the value of any paycheck! Basically, I work for "bike parts". :D One day they will be grown and gone, and I want to be able to say I gave them the best of me that I could while they were growing-up. That means I take care of me, but not at their expense, and I take care of them until they can be independent and take care of themselves. Thank goodness my DH has a career that can support this decision! :)
Most of women I know that ride LONG rides are women who's children are in college or out of house. Some of these women work so much that they don't even ride LONG rides, except on weekends, but build their overall fitness throughout the week by going to the gym for hours in the early AM or late PM. They have the time to work on themselves because their immediate family needs have lessened. So, take care of yourself, take care of your family -- keep it balanced because one day it will be ALL you and you'll want the energy and fitness to do whatever you want to in the LARGE amount of time you will have to do it!! ;)

