@Andi **********
Precisely. It doesn't even register to them that you may be living in Thailand.
At mainland European airports on the other hand, especially when departing from Switzerland (regardless of whether its on THAI or Swiss) check-in staff don't check for onwards tickets or visas. They just issue you with a boarding pass.
Australia used to be like the UK, but is now less strict. America is quite strict, similar to the UK.