PoW provides a high level of security by making it computationally expensive to alter blockchain data. It prevents double-spending and ensures fair transaction processing. While energy-intensive, PoW remains one of the most battle-tested consensus mechanisms, offering strong decentralization and resistance to attacks. PoW incentivizes miners with block rewards and transaction fees, maintaining network stability and participation. Research mining profitability before investing in hardware or mining pools. Monitor electricity costs, as PoW mining consumes significant energy.