MikeJeff, travelling by not paying out yourself but being subsidised by your fellow, paying, commuters and the treasury is just dishonest, and in essence no different to nicking old ladiez's handbags.
I do that too!!! I could argue all day! however without fail every commuter I've owned up to and it's been many (albeit all between 18-40 so a select bunch) has said good on ya! If people didn't wag the fare, do you think the rest of you would benefit from a reduction in fares?
I'm not trying to justify myself, I'm not saying it's right, but I'm comfortable doing it, I even got a date with a ticket inspector out of it!