Children of parents who 'stayed together for the kids' despite being miserable, how was/is it?

Posting this on a throwaway because sometimes I'm paranoid my dad knows my user.

My parents have very recently decided to get a divorce. My dad did something and it was the straw that broke the camel's back. Over the years (17 in a few days.) it seems as if things just got increasingly worse. My dad argued with my mom more, but he was always very controlling it seems. My mom says there's a lot of things that affected her as a result. She doesn't stand up straight anymore, she isn't happy, she always felt bad when she dressed nice for events because he made her feel like that or something, her shoulders already have released a lot of tension since they fully commit to the divorce thing. She's had a lot of health issues and even during then, as the main provider, she was thinking about the family.

So that's how it is now. He's said some pretty awful things to me too. I am struggling to come to terms with the fact that he was not a good person when my parents fought. It always goes back to normal after a couple days, so I can't accept that this is the be-all end-all. When my mom would get upset about stuff he did, I hated talking about it or talking to her because I didn't know how to deal with it. I don't know how to deal with it.

My mom said he forced her to continue breastfeeding me, and that he made her choose between my sister and him, but he still didn't leave. He always threatened divorce.

He has recently got into two arguments because I told him not to do something and he didn't like that. The latter of those two actually involved something to do with my mom, which is the straw-that-broke-the-camel's-back I referred to earlier.

My mom always thought of me and the family. This isn't her first time dealing with stuff like this. It has been very difficult because she endures everything and the up-and-downs of my dad's actions.

It's my 16th birthday soon. Last year, he hadn't spoken to me for three months. He gave me some money on my birthday. Not sure if he fully talked to me after that.

I am glad they're finally doing something. I am also trying to learn that what he's doing is wrong. I had to hear it from someone else too, which was especially difficult.

After all these years, though, I am in a position to finally show him what the consequences of his actions are. I know some people aren't compatible, but he has hurt me too. I was going to do something very special with him this summer and will no longer be doing that. He is trying to reverse-psychology the situation and tell me I shouldn't do it, but I already made that decision myself. My mom is leaving on a work trip today. When she gets back, I get to tell him. The consequences are important because it will affect family relations with other relatives. I am worried about my mother being gone, but he is really trying to save himself (regarding what I just mentioned) so while he tries to kiss up, I'll sit back, relax, do my homework, and try to graduate on time.

/r/AskReddit Thread