Read the Book of Revelation, Isaiah, and Daniel.

It's like a novel. Then consider a relationship with Jesus Christ, for
he is the way, the truth, and the life, and the only way to the father is
by Him. John 4:16..........either He said it and it's true, or he is a lunatic,
you decide. If you decide the whilom, and put faith in Christ, turn to Him,
repent of your sins, you'll be like all of us sinners, like the Repentant Thief.
Or, reject and mock the man, and you'll be separated from God forever.

After a 1000 year reign on earth by Christ, there will be a final battle with
the evil that has taken many souls with them, but is no match for The
Most High. Earth will perish, and a New Heaven and Earth will be established.
How it all plays out is anyone's guess, but have Faith in God, and you'll be
fine, even if you are a mess like I was.

There is no easy way - and it would be a really stupid thing to do anyway.
Depression is beatable. Get some help, talk to someone about how you feel, and deal with it.
Everyone gets depressed sometimes, but they don't just give up.

You have to make an effort to find happiness - it doesn't just land on your doorstep.

The simple answer is money, the fact governments choose to build up military power and compete with each in all the areas, choose to drop bombs on each other instead of building houses, in the name of ego and power to rule over others, the reality is we're on one planet or one ship, yet nations are still fighting for control over the ship.

The reality is 95 percent of population want nothing but peace and prosperity for everyone, unfortunately ruling families have acquired so much money due to the history of humanity, and because money controls almost everything, the majority are powerless to do anything to stop it.

Freedom from what?

The idea of having advanced technological society is to free up peoples time away from meeting their most basic needs, middle and higher social classes achieve better because their most basic needs are easily satisfied with the income they get from working, therefore enabling people to work on the bigger technological and scientific problems, while the people at the bottom the majority are on low income and rely heavily on the welfare system because the minimum wage doesn't come close to meeting the cost of supporting a family and living costs.

The majority of the world's population 3.5 billion people still live in absolute poverty
The poor working class are locked into a cycle of working just to survive, the system is designed to keep the poor people in survival mode working in blue and pink collar jobs, this will change as technology advances, were already starting to see this in the retail industry with self checkout systems.

As asad said, people who lack "common sense" do have other means of intelligence. One who is a poor student may be good at making friends and can become a manager because of their interpersonal skills. One who is a poor at social skills may be good at thinking wonderfully poetic thoughts and sharing those thoughts through writing because of their intrapersonal skills. It's a beautifully varied world with many valid forms of success. Perhaps being in tune with the richness of one's nature is a success that trumps other outward displays of success, even such as family and career.

Watching Joseph Campbell discuss love with Bill Moyers in "The Power of Myth" documentary.

"In the Tristan romance, when the young couple has drunk their love potion and Isolde's nurse realizes what has happened, she goes to Tristan and says, 'You have drunk your death.'
And Tristan says, 'By my death, do you mean this pain of love?'--because there's no possible fulfillment in this world of that identity one is experiencing. Tristan says, 'If by my death, you mean this agony of love, that is my life. If by my death, you mean the punishment that we are to suffer if discovered, I accept that. And if by my death, you mean eternal punishment in the fires of hell, I accept that, too."

There is something about affirming one's own individual experience above the rules of society that makes him more human than someone simply living a correct lifestyle. Those anywhere and in all walks of life can rightly experience the insuppressible dynamism that is their nature, and, being in love with life garner the love of those around them.

In short, this world would be a less perfect place if everyone followed the rules.

You could damage your organs, you will slow down metabolism, store extra fat, your brain wont think clearly, you will likely over-eat to compensate, and end up getting fat. Short term fasting can be beneficial to clear out your digestive system though. Long term, you could die.