If you use SPD pedals (not SPD-SL, which use huge cleats that are difficult to walk on), you can then wear SPD shoes which use smaller cleats designed to be recessed into the sole of the shoe. These are commonly called mountain bike pedals. There are a couple of road-specific SPD pedals - Shimano PD-A520, A530 and A600.

I use the A600s with Northwave Jet 365 shoes; I park across the street from my work building and have absolutely no problems walking. Nor do I have to do the lame duck walk associated with SPD-SLs. If I need to do a lot of walking (shopping, beer run, errands) I use Pearl Izumi Fuel shoes which have more pliable soles.

To answer your question - no, I ditched platforms long ago and haven't looked back. Clipless is night-and-day more efficient.