Satoshi's motivations are interesting to me. What was he/she/they actually trying to accomplish by creating bitcoin? Were they really hoping to anonymously buy things? Or were they trying to get rich? Or were they trying to get geeks to commit to a pseudonymous-but-public cryptocurrency to prevent a zerocoin-style really-anonymous currency from being developed? Or were they trying to get a distributed computing project going to really test the strength of sha256? Or were they trying to sabotage Folding@home and distributed.net?