As seen of MTV's Girl Code, "I Can't", I bring to you the troubles of wearing tights as pants.
Tights were always meant to be under something, skirts or dresses. They aren't good for wearing as pants with a regular old t-shirt because they are too thin and revealing. You can war them with tunics so that the shirt covers your bottom and crouch. Do not wear tights like pants because there are other bottoms that are as comfortable as tights but meant to be wore by themselves, like jeggings.