The idea behind clips is that you can pull up on the rising pedal instead of just following momentum from the other foot pushing down. It does work, but isn't really necessary for commuter biking.

I got a used bike that had a hybrid pedal with a clip on one side and flats on the other. While the clip (heavy) side usually landed down, it didn't always and it was weird to pedal with it. I just ride around on my bike, so I replaced them with cheap flat pedals and it's fine. I also converted it to an e-bike, and I don't need the extra pedal power.