And to support you but from the other side:

I grew up with parents who divorced when I was 18 months old when it became clear they did not love each other anymore. But they both wanted the best for me, and didn't do the petty shit I've heard about other couples where they shit-talked each other to the kid or something. They split time with me evenly.

They both eventually got re-married and are very happy and I have no regrets about how my childhood went in that regard.

Seconding. Furthermore, please don't feel like you gotta stay together "for the kid". At least ask the kid whether they care. My parents asked me. I told them I didn't care.

The kid is 2, so they don't really know.

Looks like you are less than 10 years into the marriage. Get out ASAP. You are stuck with alimony for basically half the length of your marriage. Unless it exceeds 10 years. Then you are stuck for life.

I think that varies by state.

Wow, those are some crazy laws. Child support is mandatory around here, and follows well defined rules, but spousal support ("alimony") is much less well defined and (in my limited understanding) less common and shorter lived.

Edit: "around here" being Australia and New Zealand

Know, soon.

Hopefully for them you've sorted this one way or another in the next year or so.

Kids are more perceptive than anyone gives them credit for.