clarence-how does the way we speak about who we are/is singlish good?why or why not?

I think that the way we speak can tell people who we are like differrent country might speak in different tone.It is like European speak very weirdly in chinese.The tone that we speaks can also show our feelings.The way we speak can also tell us our personality.I think singlish is not so good.It might be understood by singaporean but not by other countries.it might also pull down student's english subject.So we should speak english.