@ainzell it will definitely get an anime, you don't have to worry about that. You just have to realize that the demographic and the topic is very heavy for the mainstream without the usual elements that would bring the "shitty" to the forefront. The story is serious, there's no "poster girl" or mascot, there is little wish fulfilment nor power fantasy. This isn't about a young man with a grand dream, trying to leave a mark in history or trying to save the world, it's just someone brought up by heroes and try to survive and live the right way stumbling left and right while trying to repay the grace of his goddess.
It's like legend of the galactic heroes, heavy stuff usually takes time to reach a certain critical mass before it gets animated, especially with the current trend with the fanservice where this lacks.