Do you think that secularism is the best social and political system we can hope for?

I’ve technically already touched on this a little bit in a previous question. But I thought I’d touch on this specific issue more directly, in order to hear more viewpoints on this.

Just to clarify however (as there was a bit of confusion about this the last time I discussed secularism). I define secularism as a society that abstains from having a state or national religion. Also a society that maintains separation of state and church. Providing that religious practices to not breach civil law or infringe the rights of any citizens of the state or nation.

So to phrase my question in another way. Is a secular society, the best society?