Think of yourself as a part of history. One of the early adopters in Mastercoin, and you'll be able to tell your children, grand children and friends that you had (or still have if you manage to save it) 0.2 Mastercoins.

Please remember, it's not primarily a currency so it's not about the price. You'll be able to do some amazing things with Mastercoins when the protocol matures. For instance you can create your own currency backed by Mastercoins and issue it as credit for your goods and services. Just think about how empowering it is to be able to create your own currency on top of the Bitcoin blockchain protected by the obscene hashing power of the Bitcoin network.

While I hope you buy plenty of Mastercoins, if you do nothing else then save that 0.2 Mastercoins for a year and find out how valuable it really is.