All that being said, I don't think it is fair for providers to include in the calculations the fact that they have lives and families and pets and whatever else. So do all working women. Even the ones making $9 per hour at Wal-Mart.
The point here is that a provider who sees a client for an hour probably worked much more time in order to secure and prepare for that appointment, and she has additional expenses in running a business. Therefore, her "hourly rate" cannot be used to judge her income.
It reminds me of the college professor who teaches three classes in a semester. Someone will say "Wow, you only work 9 hours per week? Must be nice..."