My exh and I separated just over a year ago. It was the right decision but some thins from my post suggest that you may not fully appreciate what is ahead of you.
My ex and I reached a point where we were trapped in a slightly toxic cycle. We cared about each other, wanted to make the marriage work, but seemed to be stuck on a ground hog day of misunderstandings and arguments. In the end we realised the atmosphere at home wasn't good for us and definitely wasn't good for the children. My husband didn't really want to split thought as the relationship wasn't awful. I was the one who made it happen.
Just over a year later the space from each other has enabled us to re-forge a good friendship and everyone in the family is much happier. Our children tell me, without me prompting them, that the current situation is much better than the period before the separation.
My ex and I co-parent amicably and flexibly, still doing things together with the kids from time to time. I sometimes wonder if we did the right thing splitting but ultimately, I know we did.
BUT and this is important. It was all so much harder than I imagined. I thought I'd get weekends when I could concentrate on getting stuff done, etc. In reality, I spent months (pretty much a year) barely able to function at all on my weekends/days without the children. Do not underestimate just how different it is to choose to spend time doing your own thing while a partner is with the children from having to spend time doing your own thing while your children are with an ex. Emotionally and psychologically there is a huge difference. Speaking to divorced and separated friends they have all felt this.
Don't underestimate the risk of everything turning bitter and sour. That is where divorce is really hard on children and often there is no way of predicting how things will pan out. A good friend of mine separated from her partner not long before my ex and I split. Their relationship was in better shape than mine and the split was a mutual decision. Their thinking was that they should split while still getting on well enough for it all to be amicable. Let's just say it definitely hasn't stayed amicable. Divorce is hard and stressful and it has brought out the worst in both of them! They never seem to be in sync about getting to the amicability they originally envisaged. It's really sad to watch. The impact on the children is horrible to see.
Are you willing to risk what divorce may bring? Are you really going to be fine if you end up with 50/50 care of your children? Would you be okay being single until your children are adults because it all just gets too complicated to have a serious relationship in the years to come?
Is divorce all going to be so much better for, your husband and your children than working at keeping the relationship between you and your husband going? Is divorce going to be so much better for you than working on your relationship? Only you can answer those questions but try to do so with your eyes wide open.