There's always debate around this, and I've been on both sides of the debate.
Let's take a step back and ask - what are your partner's long-term goals, what are your goals, and what goals do you share? How does marriage fit into your goals? Is marriage an agreement of exchange of favors, transactions that you'll attempt to balance, until death do you part, or does it mean something else to you?
I've seen some relationships where everything seems to be a transaction. "You owe me this, because I did that." In other relationships, you see more charity. "I know my partner works very hard doing that, so I try to always do this, so they don't to have to worry about it." Also, sometimes you see teamwork. "I really enjoy doing this, and I'm good at it, but my partner is much better at doing that, so they take full responsibility for it."
Now, a marriage doesn't have to be "the unified one" to be successful and mutually beneficial. However, the decisions around money (like all marriage decisions) should be arrived at together by looking at your shared (and individual) goals, and figuring out how to accomplish them. Trying to "split money fairly" is one approach, but to me, it sounds like the best approach if you each have largely independent goals you are working towards, and just want to use the marriage as a way to benefit each individual.
So before you choose an approach, what kind of shared goals do you have, and what kind of marriage do you want to have?