Mining grin allmost from begining, firstly with all 3 my rigs, after slight drop changed RX rigs to eth/eth.
But nvidia rig still mines it for 3 months non stop. I believ in this coin.
I'm not really agree with you @tranthidung, you want that coin go to moon in just one year after creation.
At this time it's too much altcoins, and they not getting adoption, so i'm mining like investment, and no hope to moon in at least 2-3 years, maybe more. but i hope for someday