As far as staking is concerned, it uses way less energy to mine than using hardware. The cost to start is generally low and is infinitely less complex to get started.  However, if you do not do your own research you are wasting your money.  If you decide to stake a certain coin then your funds are locked up in that coin until you sell.   If you are using hardware then at least you can switch to a different coin if you so choose.  There is a lot to consider.