I will make one concession about clipless pedals, however.
Clipless are not for everyone. Here's one example.....
A retired couple who buy two comfort bikes to do casual riding. Even though they MIGHT see an advantage of clipless at some point, the difficulty of learning the entry and release and expense of new pedals and shoes probably wouldn't warrant the use of clipless pedals. Plus, falling over due to feet not disengaging might result in broken bones. But my guess is that very few true casual cyclists read posts in this forum, so it's self-correcting in a sense.
But most new avid riders today can really benefit from clipless. Especially those who have never used toe clips. It's the "pull foot back to get out of toe clips" response learned over years of toe clip use that gets the seasoned rider in trouble when converting to clipless. The foot doesn't come out that way! It took me probably six months for the release motion to become second nature - that is I released without thinking during technical riding/trials. (This is after 10+ years of toe clip usage.)
Using clipless doesn't only allow one to simply "push down & pull up." It allows rotational force on the pedals in all directions of the pedal stroke - a real plus.
Clipless pedals, suspension and indexed shifting are the three greatest advances in bicycling technology in the last 25 years.
Go clipless!