@Shiraznowplease
You sound like you’re very unhappy.
“I feel I can no longer support my husband being the dutiful wife and doing the mundane domestic tasks so he can concentrate on his career (his third different one”
Why are you doing the mundane domestic tasks.
That alone would drive me to Shiraz!
He needs to pull his weight, in every area, not just working and finances.
I think once you despise your partner you’re better off separating.
Your dcs won’t thank you for staying in a situation where they can feel the resentment.
I don’t think it’s selfish to want to have a career and to take pride in ambition.
To me, sounds like you married a waster.
Do you want to spend the rest of your life with him? I couldn’t be with someone who didn’t respect me enough to pull his weight or support my ambition.
I’d leave, have him take the kids for one week on and one week off.
Retrain, and get your mojo back.
You won’t miss being married to him if he’s not pulling his weight at home or supporting you as he should, I guarantee.