Because they're the only affordable Nvidia cards that aren't ancient trash like the 1030 and people have been somewhat tricked into thinking they need an Nvidia card by marketing. It's like how the most popular Apple laptops are the cheapest ones despite those often being horrible value even by Apple standards. Remember in 2015 when they STILL were selling the 2012 13" base model MBP for $1100? A few hundred extra could have gotten a much better much newer Retina 13" but people don't want to spend more or do research to get something that's actually good for more than a couple years.Its funny how all of the tech YTers that cover PCs and GPUs basically call the RTX xx50 and xx60 series of cards wastes of sand, yet they tend to be most popular cards for consumers