My DD is 4. She's going to school in September. She still sleeps with her dummy in every night.
Rationally I feel like it's overdue getting rid of her dummy, but she just seems so young to me still - I feel like I'll be gutted letting it go as much as her 
I'm wondering how old everyone else's DC were when they parted. DS was 3 just about to go into preschool and I remember thinking that was quite late!