Given that a laptop screen endures much abuse over the course of its lifetime, bashing, clunking and scratching the screen and body can become tired and old looking before its time.
All this and a laptop for most of the time sits on a desk or lap and other than the keyboard, nothing else really gets touched; compare this to an iPad where it is held like a book and the screen is the keyboard and general interface to everything on board, this really is good reason to by a purpose made iPad case to protect it from the vagaries of everyday use.
Keeping your iPad in an iPad case when it isn't being used is much more important than keeping a laptop in a case or bag, simply because the two machines are totally different animals and are used in completely different settings and for many differing purposes.
The prime use of an iPad is as a reader, reading books generically means holding the iPad in your hands if there isn't an iPad dock available to sit it in and leave it in place even when it is not in use.
An iPad case is a cheap and convenient method of protecting your iPad and a handy travel companion allowing your iPad to be carried around by hand, in the car or on the bus without fear of damage however small.
Using an iPad case is an ideal method too of keeping prying eyes from seeing what you're carrying especially out in the street or in the public domain; iPads are much coveted and are a target for opportunist thieves.
Out of sight means out of mind, and keeping your prized possession away from anyone who may be inclined to take it without your permission is easily remedied by covering it with an iPad case every time your iPad has to make a limited public appearance.
Generally speaking it makes sense to look after what is, after all, an expensive piece of equipment and while an iPad is very much like a laptop or PC in as much it is only realized how important it is to your daily life when it is out of action because it is either broken or missing.
Cover your little baby up today with a cheap, inexpensive set of clothes more commonly referred to as an iPad case.