Re-names

Have you really wondered why when our country was renamed Singapura (from Temasek) by Sang Nila Utama (If I'm not wrong, forgot my primary school social studies), she was called Singapore, to a more English version. Why can't we just be known as Singapura? Was there a reason I have not heard of? It'd be nice if you could enlighten me.

Are we called Singapore because we're just a dot on the surface of the globe, just like a pore is just a dot on the surface of your nose? Think lion's pore. Yes yes, a pore on a lion's nose. It must be damm clogged.