If prayers are for God only.. what are other people doing in it?

Here is the thing.. God tells me to obey Him and to remember Him in prayers (salat). Why on earth do I take the names of other people in "His" prayers? I take the names of Prophet Muhammad, Abaraham e.g.; Prophet Muhammad too would have only remembered God in his prayers right? Prayer is for God only as the basis of my faith tells me such.

I dont like that. So I dont do so.