Some of you guys are just so dramatic when it comes to these things! LOL!![]()
Having had iPads 1-4 and used my Wifes iPad Mini, I don't think I am. None of them have behaved like this. Retesting the iPad 2 it does have a little vibration but the volume has to be up and even then it's minimal.
From the comments here and elsewhere it appears that most iPad Air 2's are this vibrating noticeably and a few which aren't.