What I find that's miraculous, was the another group of fallible humans were able to come up with an optical solution that created some of the most dramatic and amazing space images mankind has ever seen (until the James Webb, I think). Hubble has done for cosmology what Galileo did for basic astronomy. Just those deep field images were awe inspiring in the literal sense of the word. The thought that in every tiny area of the sky you look at is teeming with galaxies that go on and on, simply puts the definition of the universe in a completely new context for layman like myself. That being said, I hope that they get the James Webb right the first time, since it's distance from Earth precludes a space walk to fix it.