...and you guys are not even taking into account that there will be GTX 11 generation next year. This will kill resell value and make your hashrate not competitive against GDDR6 etc.
Most trolls think about now, reason you see many saying "my 1080 ti is awesome, i got my roi already!", all lies, that is what they do, brag lies, the only ones who got the roi many times were the traders. ETH before the pump was $7, 90% of miners sold at that price, 5% sold at $14, 3% sold at $28, 1% sold at $100, 0.01% sold at $400, see there you go hehe, traders got more than 2000%, miners got at most 120% if they come from the beginning which is march last year, new miners that started on april did not even get 30% of their roi hehe but they will tell you they did hehe