Shoe and leg crisis: HELP PLEASE!?

Since about 7th or 8th grade, my foot arch has been collapsing badly, and also I heard that my ankles might get thicker and turn ugly (ew...) if I don't wear these Nike shoes every day (also to school). I know I should be thinking about my health, since I'm only a junior in high school, and I also know that the shoes are the best way for me to go if I want to have pretty legs and be confident when I grow up. However I'm the type that never even wears sneakers, and always wears flats and Uggs. If I wear sneakers, it's either my Converse or the running shoes that I wear for PE. Plus, would the shoes look weird with skinny jeans? What should I do? I don't want to be judged and all since like nobody even wears running shoes anymore. My friends might think I'm weird.. and people might get a different first impression of me :/

The shoes look like this:

http://store.nike.com/us/en_us/product/free-run-id... (Nike ID)

or this:

http://shop.nordstrom.com/S/nike-free-4-0-v2-runni...

Please, no negative comments :P I need help on this one.