Four arguments against the existence of God

[Neo-Scholastic]

...the unmoved mover has never been demonstrated to exist, and thus lacks any form of justification,...

Summa Theologica, First Part, Question 2, Article 3 demonstrates the necessity of an unmoved mover, as part of the "1st way."

... it in itself could not ever show that belief in any form of god, generic or otherwise, to be rational, because it doesn't speak to any form of god.

The last sentence of Article 3 states, "And this everyone understands to be God." Apparently you do not include yourself as part of that group.