“A person shouldn’t buy fancy clothing, whether they can afford it or not!”
Strongly disagree. A person should buy fancy clothing, within their means, and wear it on Shabbos and Yom Tov.
“All expenses have to be divided equally”
I disagree again. Why should I spend more on myself just to make the expenses equal, when I am more than happy to make do with less and use the extra money to spend on my spouse and children?
And to connect it with the thread, spending less on yourself and more on your spouse, whether that is money spending, or time spending or focus spending, will reduce the likelihood of divorce in the long run.
Signed,
A happily married husband with children