Why are deists so annoying?

[Napoléon]

The few deists I know seem to be aware that their belief is mostly based on intuition and thin arguments like the designed or fine-tuned universe.

This is what makes it all the more confusing for me.

Pretty much every Deist I've spoken to/met, is pretty damn intelligent. Probably more so than myself at least on the whole. Like you say, they're very much aware they can't provide a convincing argument. But this is why I think they're being intellectually dishonest with themselves. Why is it they can convince themselves there's some supernatural entity, but no one else? They choose to make the leap of faith, in spite of them knowing it's unnecessary. I will never understand that.