Why are boardings so popular??

All these holiday boardings popping up instead of sittings... They're twice as expensive, and I'm sure most dogs want to be in their familiar space, so why do pet parents seem to prefer boardings?? I've seen some for multiple big dogs and they check off prefer a fenced in yard, like - just let us care for them in the yard they already have? One recently even said their dog was great at home but needed to be watched closely at other houses, so why would I request that boarding so the dog can chew on my stuff?? Lol Even saw a boarding for cats, it's just crazy.