[skymer]

We pay all the monthly family bills (including joint purchases like cars, vacations or home improvements) in proportion to our earnings/wealth. We do not have a joint bank account. Any personal items like clothes, golf clubs, or suborbital space flights are decided on and paid for individually. If both people want a suborbital space flight but only one can afford it, the richer one would probably pay for both [if they intended to return home after the flight]. As long as both people have a reasonable amount of savings, this works fine.