By the same token, the non-accountants in politics shouldn't be listened to on budgetary matters, the non-lawyers should be disregarded on legislative issues, and they should all be ignored on matters of foreign policy.
I'm not impressed by the "they have to have done it before they can be taken seriously when talking about it" because let's face it, how many of them know what an honest day's work is like?
Yet they're fucking about with the man on the Clapham omnibus on a daily basis - people whose lives are and always have been alien to them.
However, you must temper the above with the fact that I live in a totally different political atmosphere to you.