Personally if I was a "real" teacher in my state (which requires a Master's degree and additional certifications) I wouldn't be able to afford leaving to start an in home. Teachers in my area are paid much better than in home caregivers and have pension, benefits, a lot of time off, etc.
Yes, they have a lot of crud to deal with, but that's true of any job. No way would I give up my summers off, all the vacations and holidays to work 60+ hour weeks with maybe two weeks off a year...
Now, if I was a center teacher, it would be more doable. Most centers pay their teachers $11 or $12 an hour to start.