Actually having lived overseas, I have come to appreciate Singapore more for what it has to offer.
Perhaps the small subset of people that you interact with are obnoxious has caused you to dislike Singapore, but you really need not bash the whole country. Such obnoxious people, if that is really the root cause of your feelings, are present in most if not all countries. So its not as if by moving, you will escape them. Besides, if you are unable to live independently in a different country, and are, as such, 'stuck' here, why not make the best of it.
By the way, I'm a Singaporean and I don't appreciate being called trash.