I have personally looked into this business and had a friend who used to have a ETH mining farm back in the days.
However
- mining btc now in 2024 got very complicated , especially when you look at all the big competitors with crazy farm setup
- electricity costs are above the roof on most countries
- the cost of buying the Required hardwares/GPUs is a bit absurd
- BTC mining now looking crazy profitable making you crazy rich but hey on bear market shit can get hard.
But on the other hand if you really dont care on the short term costs and planning to hold it for longer run you can for sure do it. But in my point there are better stuff with good ROI atm than just mining.
- Also back 1-2 year ago ppl were talking about how they would prefer if BTC would be proof of stake instead of proof of work