In an interview with The Catholic Spirit, one of the nation's top Ecclesioligists, Prof. Duncan Stroik tells it like it is:
"For a Catholic, and for a Catholic building, beauty is essential, because first of all, God’s middle name is Beauty. And he, being in his creation, created great works of beauty that we are able to be stewards of. So, in our own way, we’re asked to imitate the creator in also creating beauty. So that’s the most important reason that we should build beautiful buildings — that it’s for God, it’s for his glory and it’s an imitation of him."
The above photo shows Stroik's (soon to be declared) masterpiece, the Shrine to Our Lady of Guadalupe, in one of my favorite towns, LaCrosse, Wisconsin.