Can't really see how people have trouble with clipless pedals.  To un-'clip' you just twist your foot and that's it - where's the issue  ?  Using old style clips and straps is a completely different story though: even if you have the straps done up lightly you usually still need to reach down to loosen them with your hand first.

I had a few, ahem, 'mishaps' with clips and straps, esp. using them for commuting but never had a problem with clipless pedals.  Would never consider using anything else these days.  All the benefits of clips and straps with none of the dangers of getting "locked" to your bike.

Michael.