omega44-xt
Gear up ...
I'd prefer plastic over glass, at least I can carry it without a case. I rarely drop my phone but still, I use a case because the back is glass. Most Indians use a case, so really it doesn't matter what the back is (metal would be great). Companies found a good spot to cut some cost IMO (Poco has plastic back as well & many reviewers did appreciate the cost cutting approach).Samsung will give android pie on august 2019 for M10 and it may not get Android Q.
Yes,Asus M2 is lot better than M10/M20 but backside is made up plastic