为什么说买二手车便宜？有点高不懂

Advantages of New Car
Perhaps the most attractive advantage of buying a new car is its warranty. Usually, the warranty comes with free car servicing. A new car is equipped with new paintwork, new tyres, new engine and the likes. Considering that the car is brand new, you can rest assure that the car is accident-free. The owner is at liberty to customise the accessories for the car, such as its bodykit and spoiler. Psychologically, the owner of a new car will probably experience a euphoria high from purchasing a brand new item. Lastly, new car interest rate is relatively lower, translating to lower interest paid for a new car loan compared to a used car loan.

Advantages of Used Car
Purchasing a used car means that you are paying much less as compared to a new car of similar model. Furthermore, a used car depreciates less as the first owner has already absorbed most of the loss. More often than not, additional car accessories do not raise the price of the car. You probably be able to get a fully-equipped used car with super stereos and racing add-ons at a greatly discounted price. For some models that are no longer in production, they can still be found in the used car market. If the previous owner takes good care of the car, you may be buying a used car at almost new condition, but at a much lower price.

这个是网络上给的一些参考文章。但是我觉得二手车也不怎么便宜啊。不知道到底是我哪里搞错了，希望有经验的朋友能给我指点一下。

就拿一个例子来说：
http://www.sgcarmart.com/used_cars/info.php?ID=50577&DL=1137

比如Toyota Camry官方版本的不是PI的，$90,988。
vs
21-Mar-2007注册的车卖71,800。

假设这类中档车型不提前报废，一共给你开120个月，花90988，不考虑维修，贷款等额外因素，也就是一个月花758.25在车上。
如果买这台21-Mar-2007注册的车，还能开92个月，花71,800，不考虑维修，贷款等额外因素，也就是一个月花780在车上。

当然买2手车里面会有节约贷款利息等一些因素，不过贷款节约的钱和汽车提前老化维修还有"处车"情节的损失就算他相互抵消吧。
这样也看不出来为什么很多人说买二手车的话，大多数损失都是first owner承担了，也没有觉得会有明显的划算，或者甚至有些更加不划算的感觉。

哪位高人来解释解释？谢谢