Why is it so hard for people to believe in randomness?

I mean, why is coincidence so hard to believe in? Some people believe fate puts us at the exact place we are in for a reason. I know a lot of people who don’t believe in evolution because they refuse to believe human life is the result of millions of years of random changes. Even the idea of Karma is based off of a random event being tied together with someone because they did something unrelated to said random event. There were some who tried to claim that the results of Hurricane Katrina came from bad Karma on the United State’s part.

Is it really that hard to believe in coincidence and random events? Why cant humanity except that there are events outside of our control?