They may not have zippers, pockets, or buttons, but they're arguably the best way to cover your backside.
The obvious: they are the most comfortable pants ever.
Nothing beats relaxing in some spandex that doesn't remind you of the last meal you ate or whatever body part your jeans unforgivably dig into.
Via: fopandfox
Everyone has days when "real" pants with buttons and zippers just seem like a terrible idea.
Via: vimeo.com
They are so versatile! Case in point: the legging + sweater pairing
Via: ebay.com
A gazillion options, some of which aren't possible with "real pants."
Image by http://adezl.blogspot.com/2009/10/streetstyle-maryna-linchuk-oversized.html & http://www.fashionenvie.be/2013/02/street-style-nathalie-rockin-fringes.html) & (Via http://www.chict<