Yes, I am promoting ignoring the evidence. (As for 40% being the majority..."you keep using this word...I do not think it means what you think it means"). Here's why:
Relationships are not science experiments. If I inject a certain drug into a person, previous scientific documentation tells me what I can expect to happen. Maybe the heart rate increases, maybe the person vomits. There are only so many factors that can influence the action of that drug in the body - maybe the person is obese, or on other drugs at the time. Human relationships are far more complex than the body and so many more factors come in to play in each and every relationship. No relationship is even close to the same and depends on what's happening with each participant in a specific point in time. And yet they can have similar outcomes (such as divorce). Fair enough.
But when people start comparing themselves to other people, and their relationships to other relationships, they play into the idea that there is a Certain Way that a relationship must be and that if their relationship isn't That Way, it's a bad one. (For example, I read about a woman who was upset because her boyfriend didn't propose in some splashy, Youtube-worthy event and her friends were giving her the side-eye for it.) If you are happy (or unhappy) in your relationship, you should address it in the context of your relationship, and not your parents' or your neighbors' or your best friend's. If you continually look to "the evidence" to make your relationship decisions, you're essentially dooming yourself.
So instead of looking at all of these statistics on cheating and divorce, focus on your own damn relationship and no one else's. Maybe you'll still get divorced, and that's reasonable. But maybe you'll realize that sometimes marriage takes a bit of hard work and elbow grease to tough out the hard times and instead of just giving up in this disposal-happy time of ours, you should make the effort to turn it around before throwing in the towel because 40% of other married couples have.