Why are the people still so lonely despite the massive crowds?

It goes without saying that everybody is so lonely in their essence in spite of massive crowds and 8 bilions of the world's population, quite large cities fullfilled by skyscrapers, to put in another way, you might not be able to find a date or friend who could understand and back you up at all times you need. When you log in your social media, you don't receive millions of messages, it's not quite easy to meet new people and there's no matter how much social or outgoing person you are, you always feel alone yourself in your essence. Why do people feel like that? Does it perhaps come from the creation of people by God?

Why are the people still so lonely despite the massive crowds?
Post Opinion