[ Добрый вечер (вечер здесь, в Канаде)!  Your English appears to be VERY good! ]

The only thing people are interested in today is money.  [√]

Each of us would like to get some financial independence and social status. [√]

What is wrong with the human desire to ensure a comfortable life for themselves [one's self] and their [one's] family?  [√]

But the question is not only in his [one's] desire to have money , and but in what place it occupies desire occupies among other human needs and aspirations.

Many of us would have, from time to time, to put these questions to myself ourselves, but would not lose [or not betray] pledged to us not to betray the eternal values, in spite of whirling modern life.  [I'm not exactly sure what you are saying here. ]

Unfortunately , to date, to develop certain stereotypes that money - is the key to happiness.

Nowadays money seems to be the foundation of a society. [√]

You will not be able to do anything without it. [√]

But, on the other hand, too much money might be more harmful. [√]

We spend more, but have less; we buy more, but less than are less pleased. [√]

I think that happiness is in the smile of moms and people close to you, it's peace in the world and the sun over your head! [√-]
Without doubt, money is important for the entire world, but in reasonable limits. [√]

People even don`t notice how money becomes the only happiness in their life and it is the worst end. [√]

So, I can easily say that money is the root of an evil in the weak people`s hands. [√-]

[ Великий английский!  And I agree with much of what you say too. ]