I don't know why everyone is so shocked with Suzie's response. I have been following this forum for a while and Suzie was actually being kind by saying she doesn't do it but if others do do it that's their choice.
As for the comment above "you can't be doing learning activities from open to close" really? That's your only job how can that be so difficult for some? If that's a major issue don't do childcare.
Many people at work don't get a two hour or 3 hour break while children are napping and have to clean the house after they get home from a long day at the office.
When you go into your doctors office ask him how many times he leaves his work on the clock to go pick up groceries.
As for the life learning skills, give me a break! Typical excuses to justify dragging someone's kids around town to pick up groceries and to run errands how unprofessional.
You work long hours and that's parent of the job so if that doesn't work for you find a job outside the home were you get a half an hour break and can go pick up your groceries than.