Daydreaming, linguaphile-style.

 Just for fun and linguistic self-indulgence:

If you had all the time in the world and unlimited resources, what language would you choose to study to fluency? Why?

Living, dead, created, common and obscure languages welcome.




(Also, I just found the "language stalking" tag, and I'm tickled that I'm not the only person who does that.  Thanks for affirming my life, linguaphiles.)