I'm quite apathetic about HS2 now, shock I know, after originally being dead against it. All the talk of journey times and unremarkable savings make it seem like a massive waste of time but I saw something a while back that looked at in a different light and showed me at least a little logic in the decision. Rather than viewing the time saving as a primary driver behind the decision it looked at the expansion in capacity for the network as the main reason to build a new line. However, in this day and age it makes little sense to build a new line that isn't a high speed line so the time saving becomes and consequence rather than a cause of the decision to build HS2.
Still have my reservations but it's the only way I've seen any positive light shed on the scheme.