Everyone likes wearing jeans. Whether they are tight or flared, paired with sneakers or heels: denim, universally, is flattering to our legs.
However, no matter what size you are, putting them on and taking them off is beyond annoying. That's why we have more options!
There are jeggings. My mom just bought me two pairs and they don't even fit me. They came in a size small which corresponds to sizes 4-6. Not with 00. (Please don't attack me with the "it's not mathematically possible, gain some weight!" speech! I'm not tall.)
So yes, there are jeggings. And then there are cargo pants.
I think they're useful. Michael Kors (speaking of MK, have you seen this masterpiece?!) is a genius. There's no other way of putting it.