tell me good things about daycare!!

My daughter is starting daycare in 2 weeks 😢 I went this morning to meet the teachers and drop stuff off and spent the whole time trying not to cry! She's going 3 days a week and is a horrible spitter and napper....I feel like they are going to hate her! Can moms who already have their babies in daycare or who have used daycare in the past tell me some positive things about it? I'm a wreck!