What am I?

i walk about the streets neglected
  seen many places
tho i seem to get around undetected

the years you know, have worn me thin
  somewhat tattered
tho tossed about, i never wonder where i've been

protruding nail didn't cause my pain
  no patches here
no doctors fees for someones gain

you need me more than i need you
  i'm sometimes smelly
when it's time you will renew

nothing seems to offer me solace
  tho i can be costly
you'll find me in your bottom closet