I don't really care about airdrop because most of them are scams and some who pay only give no more than $ 10, now it's not 2017 and we can't relax just joining airdrop to get income, we have to work hard
I agree with what you say, because now airdrops can no longer produce more money and many tokens that we get are just rubbish in our wallets, and I think the airdrop sweet period has officially ended at the end of 2017.
Those tokens might be rubbish to you but to some, it is not, it all depends on your financial stage. There is one thing I have learn in business, it not about how much profit you can gain on a particular product, but the most important thing is the turn over. I could decide to sell a product for $100 and it would take me like 6 months to sell it while I sell the product for 10 dollars and take me few minutes to sell it, you cannot compare how much I would gain when I sell several of that $10 own within few minutes.
This is what I see in the case of airdrops, the money might be little, but the numbers of times you are able to quickly participate in any of them is what really matters the most. I have participated in at least 5 altcoins within the last 2 months which I have gotten at least $20 from each, meanwhile most of the campaigns I have done for like 6 months now has not even paid me 1 cent.