true...but it won't affect me at all whether I spend 100 watts a day or 270 watts a day. At the end of the month it won't be very significant. Of course, for those who invest heavily in this, I believe they need to do a lot of calculations to know if it will be worth it or not

When you crunch 24/7 using 3060, that's a way more than 270 Watts per day.
Just the 3060 alone draws about 150-200 Watts, that's not including CPU, RAM, Mobo, Monitor, etc. If you use 3060 for 24 hours (a day), that's like 4000 Watts*h per day without including other components. 15 times more than "270 Watts per day".
If you don't pay for your electricity or have a flat fee, that's different.
I just gave an example of how it wouldn't affect me because I've had my PC on for over a decade and have had several PCs throughout my life. I usually turn my PC on and only turn it off when there's a power outage or something breaks in the hardware. Maybe not everyone can do that, but as I said, I don't care if I pay 100 watts, 270 watts or those 4,000 you mentioned. At the end of the month, electricity always costs between $80 and $150. And when summer comes, it can reach $200 with the AC on in the room. I can made pay