DH & I have a system whereby we pay a set amount each in to a joint savings account, which is proportionate to our earnings. For many years I was earning significantly more than DH, so would pay double the amount he did. More recently, our earnings have evened out and we pay around the same amount in each month.
After paying for our wedding and buying our house (mostly as a result of my much larger contributions to our joint savings), I decided that I finally wanted to do something for myself and pay to have breast implants after years of being self conscious. Discussed with DH and agreed that I’d use a 0% credit card to finance it rather than taking a chunk out of our joint savings. Agreed I’d pay a high amount off the card each month in order to pay it off within a year and avoid paying any interest. This meant that the payment amount I’d usually be putting in to our savings each month would instead be paying off my card, leaving only DH paying his amount in to savings for the next year. DH confirmed he was ok with this at the time.
Ive now had the surgery and have been paying my card off for the last few months. DH has been making constant digs about me “wasting all our money on my tits” and how I should be grateful that he’s paying for my boobs and has “allowed” it. I’ve pointed out that he isn’t paying for anything, I’m using my own money. DH’s view is that as I’m not paying in to savings whilst I’m paying off my card, we are using his money as our joint savings which we are both benefiting from, therefore he’s effectively paying for my boob job and that basically I should be thankful 
AIBU in thinking that DH has a totally warped view on this..... surely I should be able to spend my own money however I want to?!