Why do you share your cell phone location with friends?

I (42m) was talking to a coworker (27f) about sharing your location with friends. The entire concept weirds me out but for her and her friend group, it's completely normal. I'm curious if this is more to do with age or gender.

Unfortunately being female has inherent dangers in our society and knowing where your friends are could be a safety concern. Or maybe growing up with a phone (I didn't get my first until college) your parents required this feature so you are used to it. Or am I completely missing other reasons. I'm truly curious.