If a benevolent god exists be could be testing me to see if I do the right thing by not accepting christianity. If this is true, I have much to lose.

1. I do not "lose nothing". I give away a great deal of autonomy, I have to shut down part of my critical thinking, by current indications I will also have part of my income diverted, I lose time with my kids, I have to start hating myself for my sexuality, I have to start despising my lover for her sexuality, I'm required to listen to half-baked arguments in silence (big ask there). I'm sure there are other losses I could catalogue.
2. I lose nothing if god is real. The "Problem of Evil" (and his "own" writings) would indicate that god is the kind of self-absorbed arse with whom I wish to have nothing to do.