I don't get it. Why everybody is crying?!?
Maybe some of us don't want to wait 6 or 9 months to ROI my l3+ ROI was 4 weeks.
Sounds like you got spoiled by your L3+. There's no guarantee of ROI, don't be ridiculous. If you're not mining long-term, then why bother? Think of it as an investment in your mining business and any investment takes time to pay off. Just because you got lucky once... my Ibelink 384 MH didn't ROI in any sense of the word.
It can be a calculated risk if timed correctly, with the L3+ it was ordered when I knew the batches were pretty new to the market... I think it was a little naughty for Bitmain to change their game with the D3 , they teased the first few batches and then just flooded the market with D3's over a short period ( November 20k+ in particular)