"A happy mommy makes a happy family."
This is an old phrase, but it is still true. I have 4 children and both my husband I work full time. I can not imagine working, it helps me feel fulfilled, it lets me use my brain, and it gives me a social outlet.
In terms of what to do with your kids:
I am very lucky in that there is a nursery at my work for ages 2months to 2 years. After that I put them in nursery school full day (7:30-4:30). Then to school. I have found that putting them in school actually makes them function better as they get older, they know how to socialize at a much higher level then their peers. They know all about mommy always coming back to get them when she drops them off, so separation has never been an issue and they know that when they come home mommy is going to play with them and spend time with them. (I cook all the dinners on Sunday so all I have to do is toss it in the oven so that I do have time to play with them after I pick them up).
The weekend, as you can imagine is a very special time for my family. I am a religious Jew and therefore on Saturday we do not use electronics at all. This truly facilitates true emotionally rich family time, where my husband and I play with them in groups and individually.
Overall, as long as I stay very organized, I feel like I get lots of face time with my kids and they get the benefit of socialization and everything else that comes with school.
And I am a happy mommy which makes a happy family.