S9s will be mining at a loss around June. Roi is approaching never very quickly at current btc prices.
Ive done my best trying to demonstrate this obvious fact to people in this thread, simple hashrate forecasts show were entering a period of negative profitability for all of us.
Yet, people cannot see what they dont want to see, once emotionally invested its hard to remain rational. Hence S9s are still selling like cupcakes every time a batch is released...