Originally Posted by
PaulH
Why do you need a computer in the first place? You ride until you get to work or home, and then stop. It's unlikely there is an enforced speed limit that you get fined for exceeding. If it's too cold you zip up -- too warm and you unzip. You already know how far it is.
Paul
There's lots of things I don't need but have anyway because they make the ride more enjoyable or more productive from a training standpoint. Some people like to track mileage for maintenance purposes and since I ride more than just to work and back, I need something that's going to keep track of the miles for me.
Personally, I often like to know how fast I'm going and arguably more importantly (especially for my knees), that I'm keeping my cadence in a good range
You may not find them valuable in any way, but that doesn't mean others don't have legitimate reasons for using them.