When my husband and I married, we brought about equal annual incomes to the partnership, and the following assets/debts:
Me: assets: paid-for vehicle, $8K in 401K; debts: 0
Him: assets: 2 teenagers; 1 home; $10K in 401K; vested in pension system (not yet eligible, but an accessible resource down the road); debts: $12K in CC debt, home financed 90% LTV and needed work (new roof, assorted other); impending college costs.
We replaced the roof ourselves, paid off the CCs, kept saving for retirement (mostly mine; he's largely relied on his pension plan), and paid to put the kids through school and find their way to financial independence -- a long process for one involving issues like pre-existing health condition and difficulty getting affordable health insurance (we made sure she always had health insurance).
By the time DH qualified to RE within his pension plan, our incomes had each increased, his by about 80% of baseline and mine by about 110% (so enough that my higher earnings were noticeable, though not vast). Now that he's retired, his income is about 30% of our household total (mine provides the other 70). We have a young child (and a (step)grandchild on the way :) !), and when I posted on a different board the other day about who takes care of your kid when school's closed, I used the word "priceless" to describe DH's availabity to do that 3 times in 2 paragraphs.
As my mother grows older, I look at whether we want to organize our home/lives so that she can live with us, either temporarily but long-term (e.g. for several months if she needs to recover from a health crisis), or full-time. DH's parents are deceased, so if we decide to take on this responsibility, it will be on behalf of my side of the family, not his.
I have always understood DH and I to be a team working toward shared goals of various flavors, certainly including but far from limited to FI. Obviously in our case a lot of that has involved caring for and providing for kids, and I don't know if kids are part of your household or whether you want them to be -- or whether you can envision yourselves caring for aging parents.
To summarize: For me personally, I cannot imagine limiting my understanding of what DH and I each contribute to (or cost) our household, either now or looking at the longer term, to our financial inputs/outflows.