Seem to be 2 types of family/ couple finance models:-
1 - All your money goes into a single pot both partners dip into for personal use as their (perceived) needs arise.
2 - You both get paid into your own personal accounts which in turn bounce most of the cash into a joint account leaving each with an agreed amount of spending money.
We operate model 2 with personal money covering clothes, dental/ optician stuff, sports kit/ gym memberships, gifts to each other and usual occasional little luxuries. In my experience blokes miss out badly in model 1 relationships. Ladies, especially non sporty ones, seem to have a drip drip dependency on cash for lots of smaller value clobber (clothes, shoes, pointless cushions, hair cuts) which get through under the radar as "needed" without "permission" from the other half. Men seem to spend about the same amount per annum but on fewer very high value items (bikes for example) that because of their value apparently have to get prior approval.
Model 2 means it's yours to do with what you like and no need for petty titt for tat purchases and grumpy post spending huffs.