Don;t exactly feel guilty, we have our own business which although it takes a LOT of time from both my husband & I, it also allows me to be with my sone more, even if at work. He get of the bus at our business, does his home work in the office, then helps out or plays. I feel bad for my son sometimes because he doesn't have a "normal life" he doesn't get to hang out at home - but then again our shop IS home in many respects.
I used to work out, and when I ask him which HE would rather have - he says the business. He knows it means certain times of the year we work 7 days a week for months on end, but also knows that he comes home to HIS space, not to a sitter or day care andeven at 8 he feels that it is worth the trade off. But each kids / family is different. He is very adaptable and like us, can change paths at the drop of a hat. He also loves that on occassion he can go on a job with mom or dad - something that would not happen if I was back in the outside work world.
As for me I have to work outside the home - I am not a homemaker on full time level - I would go crazy. I feel I have the best of both world I have a job to get up and go to, with outside interaction with other people, but I still have the benefits of working with family - which PS requires a very strong marriage, which am happy to say I have.