Frankly, I also don't bother to sync my iTunes to my work laptop (which is where I spent the most time sitting around) and I notice that people at the office don't seem to any more either, they just use their phones. It's partially because it's not really any easier to listen to music on your computer any more than an iPhone or Android phone.
Feel like there's an assumption here that an iPad is a giant iPhone and I think that's as faulty as considering it a tiny laptop and evaluating it on that basis. Just not the same.