Look. All current coin transactions are handled by the miners. If this were not profitable, then all the mining capacities would be turned off. And if someone is engaged in mining, it means that it is profitable.
Earlier, equipment for mining paid off for less than a year, now this time has increased.
Anyway, I can not say that investing money in mining is very effective. The only plus that can be is to work for the future and when the market starts to grow you will get much more profit.
Do you still hope that the market will start to grow?
I think the current situation will last for a long time. Although if you now purchase the mining equipment, when the prices for it fell, you can get a profit in the future.
The market will grow. These are the laws of economics. The main thing is that demand exceeds supply