Atheism, A Grim Position?

[Exian]

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Hello, I'm new to the forum. Full disclosure: I'm currently a non-traditional theist. However, I have considered atheism a few times but it seems to be such a grim position. Let me explain.

As I understand atheism, these would be a few of its tenets:

There is no ultimate meaning. Therefore, all lives and events are ultimately meaningless.

There is no ultimate basis for value. Therefore any moral position is ultimately arbitrary and logically, equally defensible. This means that things like genocide, pedophilia, torture, etc. are equally defensible to any other moral position.

There is no ultimate intentionality associated with/in reality. Therefore, all events, actions, thoughts and behaviors are determined by chance and necessity. Thus, an individual's thoughts and actions are determined solely by prior causal events and chance.

At least for me, if I take these atheist positions to their logical conclusion this all seems psychologically pretty grim.

I'd be interested in comments why this is not necessarily the case.

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I'm raising a 9 year old little girl. We do a lot of ping-pong (Christmas gift), Xbox, and homework. When the weather gets better, we'll start brushing the horses of their winter coat (don't ride them anymore, too old) and treasure hunting at the lake with our metal detectors to add to our treasure chest of crap. Hopefully, we'll find some cool stuff along the way to look at under the microscope I just got her. It's a binocular 1280 magnification with a smart phone hook up. She hasn't had one that strong so we're excited to start looking at stuff and drawing what we see in our pads. She goes to dance class every Tuesday and had a Christmas dance recital before the holidays. That was fun... and hilarious.

Oh, also, I don't believe in god.