In my opinion, mining is very safe. In the worst scenario, you lose up to 30% of your invest money (by selling your GPU, CPU, Mobo, PSU at 70% brand new price). Ofcourse you need to sell mined coin for electric bill, you can hold some, but remember not to hold all.
So it's acceptable.
I disagree. I was mining with 30 gpu's in 2017, 2018, 2019, and half of 2020. Though all of the ups and downs, I never shut rigs down, and I didn't sell crypto to pay for electricity. Sure I could have sold some eth in Jan 2018, but I did not, and that is what it is. In fact, I still have yet to sell a single mined coin with the exception of trading etn to btc in late 2017 and rvn to btc in late 2018. I mined the shit out of eth and xmr and I still have all of it. I used savings and tax refunds to pay for electricity costs and I continued to mine regardless of what daily profit calculators were telling me. As a general rule, I mostly stayed away from mining total garbage.
I began selling off gpu's one by one in Sept of this year getting back about 50% of what I paid for them new. All in all I am very happy with the fact that I didn't sell off coins to pay for electricity. Had I done that, I would have been selling coins way lower than I wanted to, and I would not be in as good of a position that I am currently in.
All things considered, mining certainly is a fun adventure, and I continue to mine on a very very small scale. I doubt I'll ever mine with more than a handful of gpu's again. Not @ 10 cents/kWh anyway.