Paying partner to be childcare

[RandomNumberName]

Bit of background...

My husband and I split our money 50/50 on all our joint bills.
The only things we spend ourselves is things like gym memberships, personal purchases etc. Even things like clothes and food get a monthly budget and split between us.
Even then we're pretty happy to give each other extra whenever so it's not fixed and stubborn.
We are a couple after all.

We do it this way as at one time one of us was handling all the bills and allowing a certain amount of spending money for the month between us and it was making the other one feel a lack of control over their working life and finances. I'm not going to say if that was me or him as it's irrelevent, just explaining why we split bills, this way I don't feel guilty if I want to spend £50 on 1 item and vice versa.
You see what I mean? This way is just easier and happier for us both.

Ok so with that explained - my aibu is about childcare.
If we both worked 5 days we would earn very nearly the same.

Atm - He works 5 days, I work 2. We have a young child who we don't want to go to nursery until she's 3 when she'll get her 30 free hours.
We've said it would cost £50 a day to put her in nursery for me to return to work full time that's £75 each a week extra EACH we'd have to fork out for her to be with strangers 3 full days!
Instead we agreed he would give what he would pay to me, £75 a week so I can stay home and care for her on those 3 days myself.
We see this as - why should I lose out on my wages but at the same time we don't want dd in full time daycare.
(A relative has her the other 2 days and is happy to do so, so that's not an issue)

However someone mentioned that it's not fair on DH and why should he pay me to look after my own children.

Curiosity killed the cat, now it's got me wondering...!

Is it a reasonable good and fair arrangement we've come up with or aibu?

But when all’s said and done if you are not pooling money and having the same amount each then absolutely he needs to transfer ££ to you in respect if the childcare you do and the wage you have lost.

And it isn’t any other family member’s business.

Wow there's a lot of judgmental people in here. We tried shared finances, it made one or both of us feel a lack of control over our hard earned earnings. Which is totally fine.
We're also very generous with each other. We have our individual spending money and usually spend it on each other or more usually the kids! We never begrudge each other money, it's just easier to keep track of what disposable income I have available without having to take into account other people wanting 'spending money' too.
We would never let either of us fall on harm times as long as one of us is employed, were ok.
This is just a 'superficial' way of viewing our money that makes us happy and feel in control and like our earnings are spent how we want (well... as much as we want to spend money on bills! Ha)
Hope that explains it a bit.

@VintageStitchers
We have property we rent out as a pension pot so to speak so even though I'm not putting as much in my work pension, we do have a backup.