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I don’t think it is unpopular, definitely not on reddit.
Parents who hate each other in general should never stay together for the kids. I'd rather have two separate happy parents than two miserable parents together. >

Agreed. I grew up in a household where my parents hated each other.  Stressful as fuck watching them fight  Frustrating to see my mom tolerate disrespect. My mom for years tried to convince me that was normal but I knew better.  I developed a secret fear that all my relationships would turn out that way along with other issues. 
Now my parents are divorced after 30 years and the family drama has greatly subsided.  Had a very peaceful and fun Thanksgiving at my mom's house this year.
Sometimes the best thing you can teach your kids is when it's time to walk away from an unhealthy relationship. >

Yeah mostly it's bc they don't wanna share custody or go thru an expensive divorce than "oh my kids will be messed up" >

My friend has put up with her husband having three affairs over 20 years. I just don't know how she can stand it. Every time he does it "she's leaving" but she never does. We used to hang out with them ....my husband and I but I just can't any more. Not as couples.  He has lost all my respect and she's vented to me so many times that it's just weird to try and socialise with him now. >

I didn't think this was unpopular. Most people know it isn't healthy except for the couple involved.