But what ARE the roles and tasks you think men are naturally better at on the whole than women?
This is the where your argument falls apart.
You've mentioned going to war - well that's hardly a daily, or a desirable occurrence, and modern warfare isn't as much about 'sending them over the top' but strategy, weapons armament, etc. all of which women could do if needed. 'I'll do all the housework and mental load for the rest of our lives vs the tiny chance you might be conscripted if we go to war (but tbh so might I),' is hardly a fair trade off!
Then your DH is better at DIY, vehicle maintenance and finances but you must realise this is his individual skillset, not a 'man' one.
Most cars these days are too complicated for anyone to have a go at fixing anything other than the most basic. My granddad was a mechanic and accepts he has to take his cars to specialist now because it's all electronic, you can't just open up the bonnet and start fiddling. Most women I know are far better at both DIY (because they are a) less lazy, and b)actually read the instructions rather than 'I know what I'm doing,') and finances than men. There is literally nothing in a 'man brain' that would make them better at investments overall than women. The fact that your DH is better at it than you is just your individual personalities - I am better at it than any of the male partners I have had.
The main advantage men had as a group was physical strength, which probably was an advantage plowing the fields in 1582, or even working down t'mine in the 1950s. But in 2024, where everything is electonic and automated, that is no longer much use. In a couple where both are solicitors, one being slightly stronger than the other is of no objective value at all.
It's like when on here women assure others that the household jobs are 'split equally, according to our strengths,' because the man 'takes the bins out (5 min job once a week), sorts the finances (set up a direct debit when they moved in 8 years ago and hasn't done anything since) and does the DIY (put 1, wonky, shelf up 6 months ago after a lot of nagging)'. Meanwhile they 'do the cleaning (2 hours every single day), cooking (with meal prep and food shopping, another hour, 7 days a week) washing (and sorting, drying, ironing, multiple loads a week), and sorts the kids out (literally all the mental and physical work, doesn't sit down from 7am to 9pm, the dad doesn't know their teacher's name.'