I have wondered that many times myself. Whether it is worth your while probably depends on several factors. I suppose for a lot of people mortgages are so high that they feel they must be back in the workforce because every cent counts. Even so it is hard to see what would be left when you factor in all the other expenses.

For me, I'm going back part time for a few reasons but I am under no illusion that I will be financially better off for doing so.