I started out as a sceptic but have been persuaded, partly because the scheme has evolved, but also because it is being better explained by its supporters and promoters. My support is based on pragmatism. The scheme as proposed may not be precisely what my unbridled crayonism may have cobbled together, but the overall goals are demonstrably in agreement with the broad need for a massive uplift in capacity on the three main lines heading north from London and by now they've clearly put a huge amount of engineering expertise to work to refine and finalise the design. As an engineer myself I generally trust that expertise. Main line capacity, and the availability of London terminal platforms to serve it, is where the big crunch is on the network today, and it is preventing decent quality services at important intermediate towns along these corridors all the way from London through the Midlands to the north, whose service quanta and character have had to play second fiddle to the journey time and seat demands of the large northern cities that HS2 will serve in future. Put simply, the project delivers the equivalent of another pair of tracks, not only on the WCML, but also on the MML and the ECML, all for the cost of only one pair of tracks south of Birmingham and the two arms of the Phase 2 wye. That's an extraordinary level of benefit for the distance of new construction involved, and alternatives might have had to provide major high speed cutoffs along ALL THREE separate routes to bring similar benefits. The precise routing between London and the West Midlands is largely irrelevant to its function due to the lack of intermediate stops, as others have pointed out, but the additional London station and hub at Old Oak Common providing Crossrail and airport connections is simply genius (and very Japanese). Much of the phase 1 land has already been acquired now, or at least purchase has been agreed. Cancellation now would probably disappoint many of those property owners who have dealt already. An enormous lengthy and costly administrive task of closing down contracts, legislation, compensation claims etc would ensue, and undoubtedly lead to yet another decade or so of little progress on major mainline development, and give opportunities for further snake oil solutions like Hyperloop to be dragged out and peddled before the public amidst a campaign of misinformation funded by mysteriously-funded think tanks and pressure groups. I'd really rather not have to go through all that again. Meanwhile the aviation and petroleum sectors will have another decade of profits before their hegemony is effectively challenged further.