I dont get why I see these threads over and over. Im pulling almost $30 a day ETH or 600 + RVN coins. 12 cards. 5 RX 580 Saphire Nitro + Special Edition, 5 EVAG 1080's, 1 EVAG 1080 ti FTW3 and one MSI 1070ti
$30 a day with ETH those 12 GPUs? Sure you are.. I highly doubt it.
Anyway what you need to consider is not TODAY but the NEXT MONTH (June) because that is when the first batch of Z9 ASICs arrive and that is probably also when NVIDIA may announce the new series of 1100 GPUs. Z9 ASICs will reduce profitability and new GPUs will surely reduce the value of your old GPUs.
Add to that the threat of Ethereum switching from POW to POS, then you have a massive shit storm coming to miners. Probably not a good idea to start mining right now.