There’s one resource on earth that links the rich with the poor. It’s scarce to everyone and its amount gets permanently reduced. For some reason, mostly the older seem to esteem it more than the younger.
You actually can buy and sell it. Its price vary individually a lot, or to be more precise: It varies per individuum.
Especially when you sell it, you must be extremely carful. Because you’ll never get it back:
It’s your lifetime.
In most parts of the world, we can differentiate the following groups amongst adults:
1. People who can effort their desired lifestyle, but do not need to work for money, because they get it automatically through passive income.
2. People selling the most of their lifetime for money (employees or time based working freelancers or professionals) for reaching a desired lifestyle.
3. People who do not need to work for money because they get it from the state or other institutions; those differentiate into such who find their desired lifestyle and such who do not. Count unemployed, retired, or seriously ill people in here.
In level 4  income countries, the vast majority of adults between 15 and 67  is employed.
Normally, these people pay automatically their income taxes (mostly beside additional sales (and else) taxes, sometimes only – then very high – sales taxes).
At least in the EU the amount one pays to the state is very close to 50% (social fees included).
From your, the reader’s, perspective: If you work as an employee, you give your life to the state, at least half of it.
Think about that. Wherever taxes are used to support politicians living the high life, wherever it’s wasted for projects extremely prolongued and causing extra mios or bios of $/EUR/whatever: *You* give *your* life for it. You spend the lifetime for money burnt.
This is why you should be cautious and knowledgeable regarding what’s going on in your local community as well as in your country. Be informed. Take different sources (don’t trust the news agencies per se) and viewpoints.
This is why money matters: From an individual point of view, it’s nothing more than frozen lifetime.
Don’t let somebody fool you telling you “money isn’t the most important thing in life” etc. – if you spent most of your life for it, it is.
 https://stats.oecd.org/Index.aspx?DatasetCode=LFS_SEXAGE_I_R– The data set of the OECD is IMHO misleading as at least for many countries where the retirement ages have been raised above 65. Also using “1 hour work in the last week” isn’t a good indicator for what one understoods of employment. The babysittyer teen getting some bucks for looking after the kids isn’t “employed” in my understanding. The reason might be to obscure the real employment rates.