I too do not offer a peanut free home. My heart goes out to families that have to deal with this on a daily basis especially trusting your child's life in the hands of others whether it be a home daycare, daycare center or your child's school.
Home is the one place my children can eat what they want without reading labels and yes peanut butter is one of our favorites even our dog Shadow loves it.
The hard part is if you already have a child in your daycare and then they develop the allergy. That happened to me once.....little Scott (he was so cute!!) but likely he only came in the afternoon so his mom sent his snack and I made sure we had fruit for afternoon snack.