Excellent point! Believe it or not, some would argue “yes.”
In this context, the fact that certain parts of our brain are involved in certain mental processes associated with 'religious' topics proves basically nothing. The Romans 1 reference is an apt one in any case. (Interesting, a few years ago some atheists at a summer camp for atheistic indoctrination claimed directly the opposite, contrary to this and other scientific evidence, such as a Japanese study that found that children in that non-monotheistic nation instinctively cited God as a creator when questioned on the subject.)
Console yourself, though, with the thought that they don't really exist. ;)