Use/wear whatever is most comfortable for you and gives you the most enjoyment out of your bike. Platform pedals have been around since the beginning and still do the job well. Clipless is more efficient but may not appeal to/work for everyone.
I know a few that had to add pedal extenders to their clipless pedals because they felt cramped and started to have physical pain. By looking at the wear pattern on their platform pedals, a 1/2"-1" wider stance put their foot position where they usually were on platforms. Other people are sensitive and can feel the cleat and pedal pressing on one spot no matter where you adjust the cleat position or what shoes they try...it just bothers them and is uncomfortable. Every body is different and one has to make a choice for what they feel is best for them. In the end, it's all good. As long as people are enjoying riding around, who cares if they are using platforms, clips, or clipless pedals.