Just for argument sake. Your wife/family leaves for a trip and you think, gee, great chance to have a lady over for some fun. You order up an outcall to your home of someone you have never met. She shows up, high, drunk or just looking to rip you off, causes a scene, your neighbours see and guess who they call and tell about it?
Unless you know the lady well and can guarantee discretion, having a sex worker to your home while the family is away is incredibly risky and/or stupid when incall in available so widely. Just saying.