I guess one of the things I enjoy about bicycling (and most activities) is learning the more advanced skills - simply how I am. If I have a computer, I like to learn and practice all I can, as much as I can. If I have a bike, I like to ride it in the way that the more advanced riders ride.
Racers, those who climb mountains, and fools need clipless pedals. Even in those circumstances, the verb "need" is debatable.. But I digress..
Try cycling with platform pedals. Your efficiency won't decline noticably, you'll be FAR safer, and you'll enjoy your new bike even more! Just try it.