The words we choose say everything. Your posts are full of me, my, mine, I.
You don't see yourself as part of a team with your partner. You undervalue his contribution placing only a monetary value on his work. By that standard he's keeping you because currently you're not earning much (the maternity pay counts, I wouldn't count the money from your family).
Why is a grown arse adult getting money from family anyway? How old are you?
Where do you live that £40,000+ isn't enough?!
What are you spending money on? Have you overstretched yourselves on mortgage/rent? Are you buying better quality things than you can afford?
You're trying to maintain a lifestyle you aspire to but can't afford.
That's not all his fault. You're an adult you have a responsibility in this too.
Yes he needs to do a bit more round house and with dc but as you're not currently working and when you do you're part time the lions share is rightly down to you.
Everyone has different standards,that's life.
Not hoovering/mopping daily DOESN'T mean your dc would be crawling around in filth!
Not wanting a flash job is not a character flaw! I've done all kinds of jobs, the one I was most miserable in was the highest paid, the one I was happiest in was one many people deride.
You need to grow up, calm down and get off his case!