I'll just give the potted version of my my story.
Married 10 years, one child.
Turned out he'd shagged prostitutes the whole time, so although some may call me biased, I'm going to lay the blame for marriage breakdown at his door 
He earned about £10K more than me, but both HRT payers, so very comfortable.
Both working. I took mat leave but no career break. I seriously compromised career options by moving to his city, and continue to do so because I choose to keep his child in the same city as both parents. I could move company and progress locally, tbf - but don't want to. So I have a killer commute, a fucked social life, and have less earnings than I could have.
We paid half the house deposit each, all bills and mortgage 50/50 ever since.
When we split, the highlights of my proposal which he accepted were:
- he could stay in house and not buy me out for a further ten years
- he kept everything in the house (try adding up furniture, white goods, electrical a - it's more than you think!)
- to balance that I took 60% of the assets
- he had a business share worth over £100K and property worth £250K. As it was all pre-me, I proposed of my own accord to exclude it. Legally, it would go into the pot
- I should get about £400 maintenance a month. I don't ask for it (we both earn, we both house our child, my choice)
- he does have to pay my mortgage interest of £300 a month. Purely because I only have a mortgage because I'm letting him borrow all my equity for 10 years to keep the fancy big house
My solicitor told me that my Consent Order might fail to get passed as my overall share was so low - about 25% I think.
Now the punchline... God knows what else he has said, but I know for a FACT that he told is new gf that he couldn't be without his kid, "even though I've had to pay to keep it that way"
Oh and she doesn't know he's still sleeping with prostitutes.
So yes, there are ALWAYS two sides.