The existence of a God is fact, or not fact. It's either true for everyone, or false for everyone. Saying something is "individual" is healthy only to the point

The existence of a God is fact, or not fact. It's either true for everyone, or false for everyone. Saying something is "individual" is healthy only to the point that it does not stop you from actually researching it, and many times the best learning is done in collaboration and reviewing the work of others. But there is no way to "research" the existence or non-existence of God. It's entirely a matter of faith, which I either have, or do not - that's why it is an individual matter.