you responding to a man even if you don't like him is not helpful to someone looking to date..,..Haven't you ever heard the phrase, "You had me at 'Hello'"?!
Sr.. I think it is good manners to respond and say thank you and wishing good luck to someone who took their time and effort to write a very nice and respecful message to me even a if I will /do not accept his invitation to talk.!
I am grateful the person did look at my profile or photos and decided to write a nice respecful message to me.!!