If you use USD and want Yen you don't necessarily have to exchange them. You can start working for Yen. It's the same with bitcoins. You don't have to buy them you can just start services to earn them. I like it better because then you don't have to give out your ID to some online company!
@U2 is very correct about it.. It is how we do our own strategy for us to keep our identity.. As years changes many regulations has been implemented but as long as you know how to deal or even separate yourself from this restriction is your job.. Don't think and hope that bitcoin will be the one who will adjust to your needs..