At least theists have some reason to believe in a god (a book of fairy tales telling them it's real). Deists have nothing but wishful/wanton thinking.
You are currently experiencing a lucky and very brief window of awareness, sandwiched in between two periods of timeless and utter nothingness. So why not make the most of it, and stop wasting your life away trying to convince other people that there is something else? The reality is obvious.