Bitcoin is like realty ownership of which you can divide and share/transfer.

http://www.youtube.com/watch?v=V-3haBibXWc
Whole system works only to make possible payments matrix exist. When you purchase a Bitcoin, you purchase part of that matrix (right now there's 11 million those matrix parts we call 11 million of bitcoins). Right now 1 Bitcoin is like owning $140 in cash, but when demand will be higher, you surely will appreciate each bitcoin way more because each bitcoin which you posses is a treasure which everyone will want to posses.