I also have the same feeling that thin fonts look ugly on my humble LCD screen with dismal resolution and low ppi.
I was once complaining to a friend how ugly site X is and he said it looked right to him; later when I saw his machine it has a nice display that made site X look twice as better on my shitty display.
Lots of sites are designed on (and for?) high density displays and it ends up looking awful on low resolution screens like mine.
It's baffling for me that designers/coders don't realize that desktop and laptop display panels are probably the first thing a manufacturer will look at when it comes to cutting some corners and lowering the overall price of the product.
Also most 'normal' users will never pay the x4-x10 premium price for some fancy IPS display and calibrate its colors.
I was once complaining to a friend how ugly site X is and he said it looked right to him; later when I saw his machine it has a nice display that made site X look twice as better on my shitty display.
Lots of sites are designed on (and for?) high density displays and it ends up looking awful on low resolution screens like mine.