We'd understand you if you take your selfies with the rear camera in the elevator mirror - some of us do. There are inevitably occasions when you don't have a mirror handy, though, and you still want to know what's going to eventually make it into the photo - that's how phones with a dedicated attention to the front-facing camera came to be so popular. That's not to say there aren't regular phones - you know, ones not marketed specifically for taking selfies, that have great front cameras. On the contrary, some flagships are here too, just as they were present in the primary camera Top Ten...
Source: https://www.gsmarena.com/top_10_phones_of_2017_best_selfie_cameras-news-28837.php
