Currently, the APR on staking SPS is about 40%. Paid as SPS and Vouchers. That obviously fluctuates. It used to be lower, but people probably unstaked to move to pools where the APR is (still) higher.
You also have the power to decide on proposals, like on Hive.
And staked SPS can help you earn from the gameplay. Later on, you'll be able to stake SPS on different players and earn if they win, so you can earn even if you don't play yourself.
This is well detailed info, it really helped. Thank you. 😊 The reward looks good, I'll take a look at it and decide.