Just get an earlier version of the client. It should be free in 0.3.20.2
On iTunes, a song costs 99 cents. That is 0.01 BTC right now. If I pay via BTC, the song will actually cost me almost 2 USD. That is not cool and has a very PayPal-feeling to it
As some people have already said micropayments can be managed in bitcoin backed centralized payment system. It is not much risk that it is centralized if you only use the account for micropayments and withdraw frequently at the minimum amount that is cost effective to send with bitcoin itself.
I am not sure how the processing power needs will grow. But I would be perfectly happy to put my old machine in the server room here and let it calculate BitCoin transactions for free 24/7 once it is time to get a new motherboard. Everyone does not have included electricity and server rooms in there rent but well I still think there are many with more then monetary incentives to maintain help maintain the network. Then it is just a matter of hardware development speed vs bitcoin processing requirements growth. Anyway as long as boot miners and spenders can decide the fee they want to process at or pay themselves it will end up at the ideal level.