<prompt> Human: Especially when people are young, there are potentially lots of big ticket items you can spend money on. Examples include: Your dream wedding, honeymoon, jewelry, furniture, a new car, travel, nice restaurants, etc.When you are young, everything you spend money on that is a want but not a need, could be invested in the stock market and be worth lots of money in 30-40 years when you want to retire. For example, a friend of mine invited me to his huge wedding reception. The 300 or so of his closest friends were so happy to attend the event in the fancy hotel ball room, with an open bar and incredible food. The fancy wedding gave the couple lots of social cred and they were on top of the world at the time. After the 25K wedding and reception they spent 15K on a two week honeymoon traveling around the world. That two week period was the best time in their life. Once they got married, they spent lots of money on two new cars, furniture, clothes and jewelry. Their friends thought they were so cool in their nice home, clothes and beautiful lifestyle. But if they would have had a simple wedding, honeymoon and used cars they could have invested 100K they spent on their wedding and lifestyle during the first 6 months of their marriage in the stock market and retired at age 50.Why do so few people think about opportunity costs when they spend money?  <response>: Due to the fact everyones values are different and not everyone subscribes to your philosophy. Dont attempt to compare yourself constantly to everybody else. I save money, and spend to live the lifestyle I want. Could I just go down to Walmart and get my dress shirts instead of getting them from somewhere like Charles Thyrwhitt? sure. But thatd make me less happy. 