Lucky me , never sold any of my old RX480/RX580 cards from 2017/2018 , mined through the crypto winter from early 2018 till mid 2020 , when prices went down and stayed down , mined with full capacity, All those old rx480/rx580 are still mining ( of course lost some bc they failed and i wasnt able to repair them )
Did this as a business , so yes I had some capital loss instead of gain , but all this worked perfectly fine with my tax returns , bull market hit , made more money from those coins I ever imagined in my life .
That's my story ... and I'm still not selling any of my old RX480/RX580