Many married couples have joint accounts, into which all&#x2F;most funds go and from which all&#x2F;most funds come. For them, there&#x27;s no &quot;my money vs your money&quot;... it&#x27;s &quot;our money&quot;. The idea is that their marriage joins them into a unit, and the money is spent on the unit. For many people $500-600 is a lot, and such a couple would want the decision to be a joint decision.