When one says they feel secure on platform pedals, might I ask are you a flatlander. Like in Ohio.
Can't imagine standing on a 6 mile 8% grade going up. You need real power on the uptake and on platforms you do not get it.
All the work in climbing , cant imagine feeling secure while doing any kind of mountain work. Now if one just finds you tooling about Amsterdam, I can understand the love of platforms. All the unclicking/clicking in , in city traffic. That is a real pain.