My husband and I love each other dearly, have similar'ish financial situations (he's a higher earner than me, but I'm a high earner too) and know each other's financial situations, but I would never pool our money unless we had a child and one of us spent time out of work (which won't happen).
We have a joint account that deals with all joint costs. Anything else is on us to pay for ourselves.
We worked out the costs of running the house and determined that we could each afford to pay 50:50, so always have done. There are times that I'll buy something for the house because I want it (new pretty bedding for example) that I pay for. He wouldn't have an issue if the joint account paid for it, but my view is that it's not something we need, but something I want.
If our earnings were totally disproportionate, or paying 50% each would leave one of us running dry while the other saved a fortune, we'd split the contributions so that it was fairer.
I don't see an issue with a joint account, but not for all your money to go in to it. Just those joint costs (adjusted for any mismatch in earnings and additional costs for your child, for example).
Full consolidation of money? No way Jose!