You need to understand that data is pretty volatile sometimes. And when someone new to placed up, the old data an be easily destroyed. Just like a VHR tape [do you young guys even know what VHR tapes are?..]. In addition, over time, the quality of the data can decline or be corrupted making it very difficult to read, watch, or open. So that's a problem. Some information we have can go down the drain in ten years, maybe less. If that were the case, at the moment, it would cost quite a bit of money to retrieve it.
That said, whether the information will be saved at all depends on how it's properly saved. And who's saving it and maintaining it.
But for those pieces that do survive the trials of time, it will probably just be history. Much like.. a newspaper article written in 1900 about what someone thinks of creationism. Right now you're essentially creating a page that could be meant for the public or private. Or whatever you can think of on the internet. (esp. porn if the futures us is just like.. well, us)
(although I'm sure google or the U.S. gov't will own the world's largest archive of 1990s+ internet information) ;p