Why do you do this? Just want to invite more people to increase your income. This is probably the only explanation. However, many people are willing to participate because they can't find airdrops, so this is a market demand. Let those who are willing to participate choose for themselves.
The people can choose for themselves! Here the reason why I do this! When I start to join airdrops I was finding many scams and join them, now I will help people to find legit airdrops! Of course I will increase my income, you not?