I find hard sciences like biology and physics just as fascinating as metaphysics and theology, and I've studied them all.
Why would one kind of knowledge be more "fun" than the other? I'm not sure why someone would think hard science isn't fun enough. How else can you blow shit up? LOL
I believe the only real questions to ask are how an independent life is made from two fused cells via sexual reproduction, because apparently the process at that point goes down to the sub atomic level where we haven't the means to view it. Biologists know what happens before the fusion of egg and sperm, and even how they fuse and afterwards, but the process where the blastocyst becomes a separate an unique potential life hasn't been observed yet.
The other big question is what happened that nano second AFTER the big bang. Seems we can go right down to that moment as far as explaining what happened, but no further, for some reason. Might be the same stumbling block as the problem with figuring out how an individual life begins...somethings that happen on a sub atomic level we haven't the tools to observe yet.
NO, I'm not saying it's God, for all those with the God allergy out there, but it means there's still a few bits in the "stuff we don't know" bin.