Bitcoins are now only found online, one can buy sell trade gamble, but not have bitcoins as coins or paper. The future though might make bitcoins into real paper money like the rest of the currencies, like dollar. Though at the moment only online, we believe this will be bitcoins future.
Having it as paper and coins will most likely increase the value of bitcoins so investing then is our advice to. Anyway, bitcoins will manage to make offline payments more easy, so though the paper and coins wont come, it will still become easier to use bitcoins offline.