Yes, you are right, it is completely a nonesence idea to send ETH for an air drop. Sometimes most of us has to reason this situation very well before jumping into them.These numerous air drops are spreeding everywhere and we have to be smart. If i may ask, how can somebody pay for getting a free air drop? It absolutely abnormal to pay something used to promote or bring awareness to a project. Please let us watch out for these scam air drop that asked to pay ETH before payment on the coin air drops, they are actually scam projects.