Missing 2-Year-old DeOrr Kunz's Father on Life Without His Son: 'I Don't Know if Life Is Worth Living'

Two-year-old DeOrr Kunz vanished in the wilds of Idaho. Subscribe now for an inside look at the search for the little boy and what his parents think happened to their son, only in PEOPLE.

Since 2-year-old DeOrr Kunz disappeared nearly a year ago, his father has had a difficult time coping.

DeOrr Kunz Sr., 26, cries whenever he talks about the things they used to do together.

"I used to tell everybody, 'This is my mini-me,'" Kunz, 26, tells PEOPLE. "He liked to play with Hot Wheels and make people laugh."

But there's not as much laughter these days. DeOrr disappeared in July 2015 while on a family camping trip in a remote area of the Idaho mountains.

DeOrr Kunz Sr. and Jessica Mitchell, 26, were named suspects by the Lemhi County Sheriff's Office. "The primary problem is they're being less than truthful," Sheriff Lynn Bowerman tells PEOPLE.

For more on the mysterious disappearance of DeOrr Kunz, pick up this week's issue of PEOPLE on newsstands today.

DeOrr's parents have been the focus of the investigation, which has made them targets of ridicule, Kunz says. He wonders how much more he can take.

"I can't stand being here. You wake up in the morning and go, 'Is it even worth living anymore," says Kunz. "[But then] you get hopeful again. This is how I'm going to find my son."