People who consciously select new words as a 'lifestyle choice' are really annoying.
The first example I remember, we were in our forties and a mate - evidently going through a mid-life crisis (because he turned up with an earring a week later, yet was offended when a life-long friend commented upon it) - suddenly raised some subject, out of context, just so that he could 'casually' throw the expression 'Oh, bless!' into the conversation, having used 'bless him' for his entire life up to that point.
I'd never heard the expression until then, then suddenly it was everywhere. I lost a bit of respect for him on the spot.
Still, it saves all that time saying an extra syllable. Some people must be so busy :-)