Depending on your lifestyle, are there not times when you need more formality/style, warmth, cushioning, or sole protection than such shoes can provide? I didn't/don't mind bf wearing Vibrams while running errands, walks about town, etc but was uncomfortable with/disapproving of that choice if we were going anywhere moderately nice (eg out for a birthday). Also if we went to someone's house where he'd take his shoes off...They were tight so he never got toe socks to go inside...odors happened.
He also never went hiking in them, his own choice (people do...but depending on venue, toe/sole protection can be desirable), and I don't think I've heard of cold-weather versions ...I could be wrong there, though.
I don't see why you can't get one pair and start to accustom your feet to them slowly (from what I hear, it's a process), while continuing to wear your other shoes intermittently as you need/want...
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