Agnostics that I have known (self described Agnostics, I mean) in general do not care what others believe so long as they live lawfully and are tolerant of other people's rights and freedoms.
and then what happens when other peoples beliefs affect your rights? then do you care? We live in a world where THEISTIC beliefs affect your everyday life, there are laws that have roots in religion and we just take it. Why?
When we just go with the flow and accept everything is already set then we just stopped thinking. we became sheep. I dont have a problem with what other peoples believe until they believe affect my life. then I do have a problem. its not about spreading my "truth" is about stopping "your truth" from messing with my life.
anyway.. :-)