I have 7 ryzen CPU that I use for raptoreum mining and it was so profitable when raptoreum coin was at its ATH but now its not even worth mining, is it time to shut down my rig? .
Did you have a small business plan when you started mining? If your expenses exceed profit, then it is easier for you to stop mining and buy cryptocurrency.
I think that as long as mining gives at least a small profit, the equipment should work.