Why do we have to pay for zone 1 and 2 on the underground while crossing to other zones without coming out?

Question

Usually,I had seen people complaining about travelling from zone 3 to zone 3 on the other side but that they will have to pay for both zone 1 & 2 which is not necessary if they are not coming out from the station on either zone 1 and 2.

Answer 1

It's about the length of the journey not the just the zone

Answer 2

Use the bus, then you wont.  Public transport is too expensive, next time dont vote for Ken

Answer 3

buy a travelcard for any zone but zone 1 and use the bus into zone1 or get an oyster card!

Answer 4

Because you're still travelling *through* Zones 1 and 2. Just because you don't get out in them doesn't mean it costs any less to run the train!