I like trains. However, I like Borough Market, Georgian architecture and nice democratic planning appeal systems much better.
I think that the character of the Borough area has changed hugely since the orginal plans were drawn up in the late 80s. It's one of the nicest bits of London, and it would be a huge shame to damage the renaissance of a previously neglected bit of London by running a ruddy great viaduct through the middle of it.
Do please check out the Save Borough Market Area Campaign, and consider signing the Save the Borough Market Area Petition.