我想了想和他说, it depends on what kind of life you envision to have after the retirement. If you want to enjoy life, cost may be very high. If you know you would like to pursue some personal interests, for example, creative writing, you may not have much consumption but must focus on what you want to achieve.
我给他我们家每个月的账单看。
他自己会算多少钱他需要然后才能free。
大部分人在谈这个问题的时候多少都有些虚情假意, 炫耀一下自己的钱财, 生活的档次。想好了要过什么样的生活, 算算就有大概的谱儿了。