Why friendship is so hard?

I had a school of thought that without depth there isn't friendship, but I realized that sometimes, depth might just be a void in disguise; empty of love, care, and emotions. I have received the most affection from people who I did not expect to have such emotional intelligence and those who you hope to come through on your bad days do not have the words as put together as you'd expect. Bottom line is, never set a standard for friendship, be as open to as many kinds of happiness as you can find. Some boundaries and expectation cage you in, break out now!