What is your favorite apologetic for theism?

Share your favorite argument for the existence of God below.

Background: I'm an atheist (and have been for a decade) who's been interested in Christian Apologetics since I was a young Christian. As I entered adulthood, I found myself losing my faith, largely because I grew up in a fundamentalist, Young Earth Creationist household which taught that evolution and God are incompatible. While I no longer believe in this lack of compatibility, my belief in God never came back. I've tried to give it an honest effort, and there are many compelling reasons why I want Christianity to be true:

• Reunification with loved ones who've passed
• Absolute moral justice exists
• A plan for my life, and meaning in my suffering
• Access to unconditional love; to have a personal relationship with my creator
• Surviving my own death

For a variety of reasons seemingly outside my direct control, I still don't believe. It doesn't help that I've been introduced to strong arguments against the existence of God (e.g. the problem of evil and its subsets) which have rebuttals of varying quality from Christian philosophers. I don't think this lack of belief is my fault, or for lack of trying; I can't make myself believe anything. I try to be open to arguments, and this has led to an obsession with revisiting apologetics.

Now I think of apologetics as at least a fun mental exercise; combing through the arguments, atheist rebuttals, and responses to those rebuttals. That's probably strange, but it tickles the right parts of the brain to keep me engaged.