I've just posted in the other thread but I see no harm in repeating myself lol....
Since I generally have enough milk to feed a battalion of babies I can imagine that for a single mother without a job that provided maternity leave it would be a great job. You could work almost from the day you birthed your own baby, you could take your baby to work with you and if your work didn't include nannying or house keeping duties after a few months it could be quite easy work.
If you were married it would be less appealing unless it was a day job...