I have owned two pairs of these Costco leggings for the past three years and they are worn out as shit. Why? I have worn them, almost exclusively, throughout the months of December, January, February and March - almost every single day of those months (if that sounds like a gross statement to you, maybe I'm exaggerating... and if that isn't a gross statement to you, I'm definitely not exaggerating). So I think it's perfectly acceptable that they're a little tattered at this point. (But fret not, new ones are the way, thank you, Marla!)
I received them as a gift (from Harmeet) and at first thought to myself, "Why the hell would I wear these bland-ass-looking, thick leggings? I have a million leggings that are way nicer and more colourful. What is she thinking giving these to me?" And then I tried them on one cold night and they blew my face off they were so comfortable and flattering. I swear to you, if you give these a shot, you will not be disappointed.
Also: don't judge people who buy clothes at Costco, it's rude.