I do airdrops in my spare time, which is mainly in the evening. So, I do it for maybe 2 or 3 hours a couple of times a week. I enjoy it and I like the action. Sadly, it seems that most of the legit airdrops are gone, and the only thing left are the scams or coins that never paid out. I was always getting at least one of not two payouts a week. i have not had any since 12/31. Kinda depressing, but I will keep doing them, looking for the next Bitcoin, or Ethereum Blue.
I've participated in several airdrop campaigns with ICOs but none have paid out yet so not sure if it was worth it so far. Still waiting, I'll post here once I become the lucky winner of airdrops.