Ebbie.. if you have listened to certain evangelist preachers, you may have noted that is is common to pronounce 'God' as if it were the most ostentatious word in the universe...(I suppose it is to them).

It is impossible to do it justice in print, but it is sort of like..
"Goowwadd", done with throat tightened and mouth opened roundly, and the sound held for an extra second. I assume that capitalization is an exercise in 'respect' done out of deference to the idea.

It rather bothers me too, even though I see the intent.