Staking allows to earn passive income and does not require electricity. So it safe for nature. For those people why do not want to buy coins for staking they can participate in airdrop like this https://twitter.com/CairoFinance/status/1506234326853238791
The opportunity to earn free tokens and earn passive income attract a lot of users for staking. But for staking the most important thing is to find the most prospective and profitable tokens and block them for staking.