The amount of money wasted on gadgets and gadgets that people almost never use is amazing. For example, my brother bought an electronic ice cream maker for 100 yuan two years ago, and he has only used it three times today. He insisted that no matter how many times he used the ice cream maker, the investment was a good deal. because:? ['Ice cream prices will rise in the future.', 'He bought this ice cream maker for convenience when it is needed.', 'Because of the low frequency of use, he saved a lot of electricity.', "Due to inflation, today's 100 yuan is not as much as it was two years ago."]