Why do some atheists become theists?

I guess they see the light and take the hand of some god.

Everyone is searching for some kind of purpose or meaning. Athiests usually find it in science but maybe science wasn't enough for this particular person and he wanted to look elsewhere.

Every Theist was at one time an Atheist at birth. Due only to the lack of indoctrination.

The Experiences we have, and Environment we are brought up, greatly influence whether or not we learn to look within to complete ourselves, or need to look outside ourselves to find something that might complete ourselves. For some this is CAN be in many forms. Alcohol, drugs, or unhealthy relationships . . . Even material possessions can be the filler that is sought outside themselves. The concept of God/Gods or many religions can fill that gap as well.

Of the many stories I had heard regarding an "Atheist" becoming a "Theist", the pattern is that they were "Looking" for something . . . They were looking for a filler. Even Kurt Cameron's own testimonial attests to this.

For every one Kurt Cameron, there are several Theists who drop their indoctrination for Atheism . . . Many of them pastors and leaders in the church itself - http://clergyproject.org/

Enquiring minds search for truth in whatever form it may be found. It can sometimes lead believers to become non-believers, or the reverse. So, yes, atheists can switch to religion if they find little comfort in the reality that is science.

Some try to balance both, but riding two horses at the same time is only achievable by trained circus performers.

Some people find God.

Some people lose track of Him.