> The hardware I have sitting on my desk is vastly more powerful that what I was rocking 10-20 years ago, but the user experience seems about the same.

Not even.

It used to be that when you clicked a button, things happened immediately, instead of a few seconds later as everything freezes up. Text could be entered into fields without inputs getting dropped or playing catch-up. A mysterious unkillable service wouldn't randomly decide to peg your core several times a day. This was all the case even as late as Windows 7.