What things seem worthless but are incredibly expensive?

I think the most accurate answer is "time". Time is something that many people think does not matter, but often when a person realizes it, it is already so expensive that he cannot afford it.

Generally speaking, when we measure whether something is valuable, we measure it by price, because we can see the subject that needs to be priced, and we can feel the price. Setting a price is the same as other commodities. By comparison, everyone knows whether this thing is valuable. For example, if the price of gold and diamonds is high, we think it is valuable, but if the price of cabbage and green onions is low, we think it is not valuable. This is based on a concrete object.

But time is different. Time is an invisible thing that cannot be seen or touched. Although it is one of the main factors that constitute our lives, few people are aware of this at all times, especially It's young people. We always hear the words "I have plenty of time" from young people, because they have not yet realized how precious time is to a person, because the time consumed can never be returned. Money can't buy it back.

The older people are, the deeper they understand the value of time. Some people may have this feeling: I wish I had done this when I was young. Alas, I was not sensible at that time! This is the best explanation of the value of time, because people will regret it only when they have experienced waste and squandering and are unable to get another thing.

The longer you live, the less time you have left, the more precious it is to people. People who find themselves may make great use of their time to do what they want to do, so that One's own time produces value, which is at least worthy of one's own life. Only at this time does this person feel that he has not wasted his life.