Let me clarify; platforms w/straps (maybe this is a called a "cage" by some Folks...?). Not the old-school rat traps that locked you in. I find that a good aggressive platform with a strap loose enough to slide your shoe in is a great combo that accommodates all kinds of shoes (yes...even sandals for riding to the beach!). With good firm shoes, I can power up when I need to, and feet won't slip out on the down hills...or, I can pedal to the beach with my sandals on...no special shoes required...I was shocked to hear someone mention rat traps/straps. In my opinion they are an abomination and caused many and injury back when they were popular. But at least there are a million other uses for those high quality straps. Good flat pedals or shimano SPD for the win.
To the OP : the desire for clipless may very well have more to do with the shoe than the pedal. Good stiff comfy shoes are a very good thing.
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Not comparing to SPD's/clipless...but for non-competitive riding I have found this setup ideal.
BTW; I ride 5k + mi/yr like this...I am reasonably sure it works well.
Except for bike snobs maybe...