Staking ETH yourself, would be the most decentralized and secure path to take. We'll have to see if ETH developers decrease the staking requirement or leave it as is. What matters is decentralization. As long as ETH can remain decentralized with PoS, there should be nothing to worry about. Just my thoughts 
To me, I think, is a step-down from Decentralization. The POS only favors those who have large amounts ETH to stake and validate blocks which can not be comparable to POW where anyone could afford a good and cheap GPU could participate in the mining process