It's not my intention to be confrontational or purely contrarian here but I must respectfully disagree in regards to year round 24/7 NYC conditions.
Where do you ride primarily? The only people clipped in at all here in NYC are people
obviously out on serious long rides. I ride in rain, snow, and ice, every year for 11 years now. I would love to see someone try to follow me on pitted ice clipped in on a road bike.
You don't see it for good reason.
Personally, I have avoided a few potentially nasty crashes/falls partly due to having feet free. I once hit successive pot holes in the pitch black at just under 20mph, and the undulation caused a wobble algorithm to take over my front wheel and instantly planting both feet allowed me to correct and stop. Though I went uncomfortably into my frame and handlebars, I didn't fall or crash. I also like to change the position of my foot for different grades of climb and while doing track stands.
Nothing about a road bike set up really fits with any of that. I won't ride drop bars either for safety reasons.
We had 7 cyclists killed in NYC last Sept alone.
Walking is also often very necessary in this cycling environment, especially if you ride everywhere, as I do. I told a road cyclist I met at Coney Island that he should use the Triboro bridge path to cross the East River instead of the Queensboro to avoid the traffic in the bike lane and hook up with the East River esplanade so he can travel the length of Manhattan safely away from car traffic. He then asked, "It has steps, right?", and when I said yes, he looked sad. That's when I realized, I don't see road bikes on the Triboro often because the metal edged steps are too treacherous with clip-in soles carrying a bike. Cycling is my main means of transportation, not just an athletic hobby. I have little interest in ankle rolling my way around a store, or carrying other shoes. Though I think they make slip covers for some clip-ins soles.
If I was riding in a place where I had long uninterrupted stretches of pristine blacktop, I would probably own a road bike and full kit. The majority of my rides are no more than 2 hours round trip unless I'm training or touring. In my opinion, road bikes are really meant for a metric century or greater. Anything less, it's not necessary to have all that time shaving accoutrement. I'll do 50 miles to the Rockaways and back tomorrow, maybe with the same effort of a road bikes 70 miles, but that's good, right? I've done 126 miles with platform pedals on a 35 pound bike in a single day. Is that like a 175+ miles on a road bike? Certainly not, "casual/short/slow", riding there.
Road bike culture is an industry that has ostracized many people from cycling as a whole as they see things like clip-ins as inaccessible or elitist when cycling of all kinds should be encouraged. But alas there is little profit in most utilitarian cycle culture compared to the world of $10k+ bikes. (*See also the pre-WW2 global cycling culture.)
Flat bars offer better maneuverability, and I don't see a lot of clipped in guys track standing the light cycles like I do either.... so who has better control of their bike? If you really want ultimate efficiency and control shouldn't you be riding fixie as well?
I'm definitely a rugged individualist, and absolutely someone who likes to do things his own way for his own reasons. Around here, I see a lot of people on bikes more concerned with how they look than how they ride, including road cyclists. My last century, I passed a fair amount of casual road cyclists, all clipped in. Raced someone in full time trial gear to the next rest area, and won. I love getting to the end of a century and seeing them look like they're going to fall over and I'm skipping my way over to meal time whistling.