Meh, agnostics are just atheists who still have the 'fear' instilled by mainstream religions. Sellouts among rational thinkers as far as im concerned. The "proof" against religion is that aside from faith and tradition (both intangibles), nothing tangible exists that corroborates their beliefs. Religion isnt even worthy of debate because they argue with scripture (which is meaningless) or belief/faith (which is delusional). It makes more sense to deny illogical viewpoints than to gather logical evidence to disprove them. If you heard a 5 year old scream themselves awake and swear that they saw a purple dragon in their bedroom, would you feel like you needed solid evidence to deny it?
That said, im not denying the possible existence of (lets just call them) supernatural forces or events. Just as I cant prove that life does or does not exist somewhere else in the universe, I can't prove that supernatural and spiritual phenomenon dont exist. I just deny any factual basis for religion in general. Does religion help many people get on with their lives? Yes, definitely. Is it true? Probably not.