i ask because i do not have a smart phone. i use my home computer to shop. i have no ability to use the app in the street.
i get paranoia. i AM paranoia. i have had people not sell to me because i asked. they lost the sale. Right now, i asked a seller for her number because my friend who is not on the app is picking the item up for me, she has her newborn with her and wants the seller to come out to her car.
i also ask people for X-streets. i hate this O-Up map. sellers get paranoid about that too which to me is simply insane. they lost a sale. the seller wants me to message b4 i come assuming that i can map from the car so they will not send me the address the night before. i cannot message from my car, they lost the sale.
i offer this info to the seller but the seller could also ask. obviously sometimes this still fails and ultimately the seller lost my business.