Mining is now profitable only for big players. Bitcoin as a currency is not centralized, but the mining sector is gradually moving towards centralization and it is being dominated by a few big players, especially from China. Unless you are willing to spend tens of millions of USD in setting up a giant mining farm with cheap electricity supply available, don't even think about mining BTC.
I am not a big fan of PoS mining either. I have spoken to a few guys who tried PoS mining. The value of the coins went down continuously, and in the end they incurred losses. If you are still interested in mining, then I would recommend mining some altcoins that operate using PoW algorithm. You can later convert these coins to Bitcoin using any exchange. Monero, Verge, Litecoin, Zcash, Namecoin, Ethereum Classic.etc are some of the PoW alts.