ETH 2.0 aims to be overall cheaper and eco-friendlier, as there will be no need for dedicated mining machines to mine it. This naturally eliminates the need to purchase/maintain dedicated mining hardware and eliminates high electricity consumptions and costs. Down times and network difficulty shifts will also become a thing of the past;
It aims to improve scalability, security and the programmability of Ethereum;
The network will become more secure without compromising decentralization.
In terms of ETH, your mining equipment will become useless (which is especially unpleasant in case you have a large farm);
Depending on the available staking option, you may need to lock your funds for a specific amount of time, which might have an impact on your profits depending on how markets shift at any point in time;
You will need a minimal of 32 ETH to start staking;
Alternatively, there may be services provided by Exchanges or third parties to partially stake or joint stake funds below the minimal amount — use these with caution and always do your own due diligence on these services.
Stake 32 ETH and run a validator node yourself. For technical requirements please refer to: https://launchpad.ethereum.org/;
Provide your ETH to a staking provider. Be cautious of the inherent risks here and do your own due diligence on any services you may be interested in.