“My dog doesn’t need an ID tag because they are microchipped/ obedient/ leashed etc.”
Mia doesn’t wear a collar at home to avoid any chances of getting stuck on something while unattended. However, I like to have the contact information on her in the car or while on a walk. I am never concerned about her running away or not coming back to me, but anything can happen, and it’s better safe than sorry.
If we get into a car accident, she might get out of her crate and run away in panic. If she has a seizure, she might start panicking and gets confused before recovering completely. She might be attacked by dogs/coyotes and get lost while running away from them. Or something I haven’t considered for a long time: I could also lose consciousness/get into an accident dropping her leash in a busy area.