I think sometimes people just get comfortable with what they use. My main gun is still my faithful Sig and that gets worked on all the time. Admittedly it wasn't exactly a cheapo when I bought it sort of upper mid tier but yeah you could just buy better but it wouldn't be the same. I have owned all sorts in the last few years Recoils, G&P, Krytac but none have lasted more than a few months and very few have ever made game days except the Sig because it's the one I feel most comfortable using.
Sometimes just buying more expensive doesn't get you what you need and familiarity is more important. No gun I have ever used shoots better than it anyway.
Can't see me ever changing from it now, I will still buy new guns but they will always be back ups or stand ins.