While that may begin the process, I think (obviously, I have no proof) that this nostalgic sentiment is "hard-wired" into humanity, because it seems like throughout history mankind has always looked at the past and felt longing for the simpler times. Therefore, I believe this sentiment will only be completely overcome once we begin to literally change the nature of humanity, for example using cybernetics or biological modification.

Not knowing a world without these things might just as well be a reason for upcoming youngsters to view our current mentality as "old-fashioned". And we all know how much youngsters hate old fashioned stuff. They might not want to step into our shoes; maybe they will be more conscientious about things we are currently not at all interested in.