The 38-year-old "No Strings Attached" star, who has daughter Wyatt with Mila Kunis, said having a kid has switched all his priorities, reported Female First.
"(Fatherhood) takes whatever table you're sitting at, flips it upside down and switches all your priorities around. It's unexplainable.
"I have a new number one priority. Only parents understand the absolute awe of parenthood," Kutcher said.
The actor has decided to make his social media presence less personal and has is trying to "inspire and educate" through his posts.
"You know what's interesting? I don't really share personal things on my social media channels anymore. I have pulled back... Now the things that I share on social media are stories that inspire ideas, that connect people, that educate people," he said.