Some contacts IRL i know from years ago are mining with 10 computers since last year, i said them it is not worth it nowadays but they still trust in the system.
I personally think 10 computers this days is not enough to make mining worth it as the price of electrycity in my country is high and mining consume a lot of it.
What do you guys think about it?
It does not matter if you had 1 or 10 competers. The only thing matters - electricity costs. Mining of bitcoin and
some altcoins - profitable now. It means you gain a bit more then spend. But. Buying new equipment now - is a totally mad decision.
Mining before was very profitable compared today which is getting harder and harder due to its difficulties.
Mining altcoins nowadays will take more and more years before you get your ROI, so as suggested it would be wise if you just let your miner works for you. Until you get your ROI, buying new equipment is not really recommendable because of your gaining percentage + the electricity costs.