I visit London 15-20 times a year - never been on the tube in 10 years (that includes walking form Euston to Victoria numerous times) - esp since the Boris bikes were introduced.
Whoa, you walked from
Euston to Victoria? Insane, thats a whole 3 miles!
Meanwhile, you might notice that the tube extends beyond the central London that defines most of us non-Londoners visits to the capital.
Bit of a walk into town from Epping, no?
The tube is hardly a critical service
Is it not, perhaps even more questions need to be asked as to why we pay operators £50,000 a year to do a job where they have less control and less direct effect on passenger safety than a London bus driver does, then.