Limitations are good. See the currently highly-rated top-level comment: "why can't every server get a /48 so I can perpetrate the most ridiculous waste of address space imaginable?"
The idea of 128-bit address space seems to be that people can waste it like crazy and there will still be plenty for centuries to come. But that underestimates people's ingenuity in coming up with nifty things they could do if they wasted even more address space, and with no obvious reason not to they'll do it, until we're back in the same situation. Really, one day people will be wanting a /32 so they can do something nifty, and then it'll become a common thing, and the situation will seem oddly familiar...
10 years ago I played graphically rich instant-response video games on a desktop computer with 512mb ram and 128mb video ram (and fairly powerful cpu and gpu for the time). I knew that in the coming years more memory and processing power would enable ever more detailed visuals. But I didn't know that I would use significantly more system and gpu memory than that, just to read email in a browser tab. Because why not I guess...
The idea of 128-bit address space seems to be that people can waste it like crazy and there will still be plenty for centuries to come. But that underestimates people's ingenuity in coming up with nifty things they could do if they wasted even more address space, and with no obvious reason not to they'll do it, until we're back in the same situation. Really, one day people will be wanting a /32 so they can do something nifty, and then it'll become a common thing, and the situation will seem oddly familiar...
10 years ago I played graphically rich instant-response video games on a desktop computer with 512mb ram and 128mb video ram (and fairly powerful cpu and gpu for the time). I knew that in the coming years more memory and processing power would enable ever more detailed visuals. But I didn't know that I would use significantly more system and gpu memory than that, just to read email in a browser tab. Because why not I guess...