This in order to minimize cost, sharing the same passion for that particular product and to have the maximum usage of this product. Note that a Dutch door is also called a "split" door.
The Oxford English Dictionary connects "go Dutch" with "Dutch treat" and other phrases many of which have "an opprobrious or derisive application, largely due to the rivalry and enmity between the English and Dutch in the 17th century," the period of the Anglo-Dutch Wars. The gambling term "dutching" may be related to "go Dutch", as it describes a system that shares stakes across a number of bets.
In Greece the practice is colloquially called "refené".
In a courtship situation where both parties have a similar financial standing, the traditional custom is that the man always pays, though some, including etiquette authorities, consider it old fashioned.
In several south European countries such as Italy, Spain, Portugal, Greece or Cyprus it is rather uncommon for most locals to have separate bills and is sometimes even regarded as rude, especially when in larger groups.But in urban areas or places frequented by tourists this has changed over the last decades.A derivative is "Sharing Dutch", which stands for having a joint ownership of luxury goods.For example: four people share the ownership of a plane, boat, car or any other sharable high-end product.
It is commonly believed, however, that the Dutch reference here was in fact derived from a gangster, Dutch Schultz, who used this strategy to profit from racing. Also the concept may have originated from Double Dutch, the jump rope variation in which partners simultaneously participate.In Austria, Denmark, Finland, Germany, Iceland, Republic of Ireland, Norway, Sweden, and Switzerland, the practice of splitting the bill in restaurants is common, though often everybody pays for themselves.