If you mean people not returning flowers, then i think i should tell you that people are not obligated to do so.
Sometimes people are tired, other times they don't like what is written on the profile of the sender, and sometimes, they just don't want to encourage anything with the sender.
I think this is the first time Africa has been associated with beauty and/ or any other attribute you associate to your comment, in regards to a fantasy or simply, interest in meeting someone from there.
RE: flower
I read all of them, but before i respond, i normally dash to see who the sender is (if the name is unfamiliar).If the profile is boring, full of spelling mistakes, adds up to nonsense and more nonsense as i read on, i simply ignore or block these people.
Nothing personal, really.