Why not deism?

[Simon Moon]

Atheism is an amorphous description of a lack of belief in a god or gods. It could mean that someone has no faith in a religious idea about what a god or gods means, or it could be a philosophical conviction of some kind. 

For me, my atheism is nothing more than not being convinced god exist, any gods.

My reasons for not being convinced, is that theists, deists, pantheists, etc, have continually failed to provide demonstrable evidence and valid and sound logic to support their theistic claims.

Something I'm curious about is why deism is virtually non-existent nowadays. There are arguments for the existence of "God", that actually, in the end, don't amount to much more than a hypothetical Prime Mover, or "something" — we don't know what — that is the source of reason, volition and material phenomena. 

None of the arguments for the existence of god, hold up to scrutiny, they are ALL fallacious and flawed. This goes for: Kalam cosmological argument, teleological arguments, ontological arguments, etc.

None of them succeed in doing what they are meant to. What they are really meant to do, is give the believer a seemingly rational sounding support for their unsupported beliefs.

Is deism pointless or even dishonest, because it's asserting something as knowledge that we cannot know? Did you ever seriously consider it instead of atheism? Or is there any practical difference?

I was a deist for some time after I found my way out of religion.