Many Christians are not content with faith alone. They want confirmation that they are, in fact, correct. It makes sense because faith changes. Faith can grow, it can wither, it can disappear, but facts do not change. Thinking Christians (a misnomer?) who apply critical thinking to their faith often run into cognitive dissonance. The theology doesn't make sense, there are many variations of Christian faith, and it is impossible to know if your own version of Christian faith is the correct one. So, let the Christians search for evidence. I encourage it. Christians who want validation of their faith through evidence are probably Christians who know that faith alone can be quite shaky.