I am convinced, by facts and logic, that it is the best investment on the planet at this time.  If it goes lower, it becomes even better.

Fact:  U.N. estimates global black market at 2 tn USD in 2012.
Fact:  PQ=MV
Fact:  Cryptonote is the only dark transaction protocol providing useful levels of unlinkability and untraceability.
Fact:  XMR is the leading cryptonote coin by orders of magnitude in liquidity.
Fact:  XMR is not usable by non-technical persons without trusting a web wallet today, but will be when GUI, DB, and multi-sig are officially released.
Logic: Dark markets will adopt the best usable privacy and hence PQ is assured to approach some fraction of 2tn
Fact:  Multinational corporations require to maintain secrecy in their internal cross-border transactions.
Logic: When XMR liquidity is high enough, it will be adopted by multinational corporations for internal cross-border transactions
Fact:  Nation-states and the central banks which own them seek to enslave the planet, taking control of financial assets at will.
Logic: Wealth will migrate to dark storage, and when XMR has sufficient liquidity, it will be the dominant form of dark storage.

There is a clear three stage path from miniscule to gigantic, each step of which bears a fundamental inevitability.  It is possible although unlikely for an alternative dark ledger to take the lead, but until then, XMR has the most asymmetric risk/return in the history of finance.