Stay at home vs. part time daycare

Any other stay at home moms keeping their toddlers at home until pre-school (4 years old here in the US). I never planned on putting my daughter in daycare, but recently my husband suggested we try it for like 1-2 days a week. I always thought I would keep my kids at home with me until pre- school, so it’s hard for me to think about it any other way. Any pros or cons for daycare?