Pants > Leggings

This is something I want to address...
Recently, I have seen so many people who choose to wear leggings as though they are pants.
I do not see this as acceptable.
Unless the leggings are either;
A) Leather
B) Worn under a tunic/long top/skirt/shorts
C) Worn for sports practices [only track/XC]
Then THEY ARE NOT PANTS.
These are a thin pair of cotton, not denim, twill, corduroy, etc.
I especially do not want to be accosted by your brutal panty-lines from wearing your so-called pants.
It's kind of tacky.
I'm sure you can afford real pants, now...
Thanksss.
The image is Jennifer Hudson, and it is NOT a good look.