I think I've become a very bitter man in Singapore.

A confluence of factors have sought to make me easily 

susceptible to expressing my dissatisfaction with anyone.

Factors including:

Leaving Sydney
Returning to Singapore
My mum
Living in Chinatown
Prolonged unemployment
Knowing that I could have been offered a job in Sydney
Having an endless streak of bad luck
Rendered immobile by an infection

The grass is always greener on the other side.