Technology evolves over time as does bitcoin's use. Hard drives are becoming cheaper and cheaper, for example. Bandwidth is also a non-issue, as the typical tra

Technology evolves over time as does bitcoin's use. Hard drives are becoming cheaper and cheaper, for example. Bandwidth is also a non-issue, as the typical transaction size is less than a KB. However, there's also the fact that a typical user doesn't have to download the whole blockchain in order to use bitcoins--they'll be connected to the nodes that do (that are dedicated for that purpose).