[ygolo]

I am wondering. What is your conception of those who we call "philospohers?"

I believe, Orangey and pt are pointing out that quite often people are interested in things without knowing why they are.

Now we can certainly theorize on why they might be. But the reasons could be very varried from individual to individual.

Plausible reasons for being interested in knowing if God exists:

1) There is a lot of cruelty in the world. Some people say God is a benevolent, all powerful being. This seems like a contradiction, so they follow that apparent contradiction, and one natural question is "Does God exist?"
2) Some people question why it is that people exists, "for what purpose am I here?" Many say that it is "God's plan." If you were agnostic, "Does God exist?" would be among your list of questions.
3) Some people ask "who am I?" Many people say "we are reflections of God." So again, their investigations of "who am I?" will lead to "Does God Exist?"
4) Many were raised believing God exists to the point that they don't question it, and they based many of the answers to lifes questions on this belief. Then they get exposed a lot of atheists who make them doubt the existence. This could prompt "Does God exist?"
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There are many more, but I don't think there is a universal reason.

But you could be asking why the "profession of philosophy" deems the question of enough interest to study. I believe, the main reason for this is that the societies the professionals are embeded in consider the question important, and professions are always beholden to the society they are in.