The title of this thread is bit provocative, but the fact is that most people have a bad experience with airdrops. According to several airdrop hunters I spoke to, the majority ICOs don't pay out at all.
What's your experience with airdrops? Did you get scammed most of the times?
I will not say that they don't pay but i will say most of the airdrop tokens price is so low that when i tried to sell it into market i lost my ETH or BTC. Actually maximum time we don't take care about airdrop tokens as we are busy with trade or bounty. So i think airdrop is just like a time consuming nothing else.