I would love to buy the new iPad. I love Gadgets but really, I cannot find a use for it, apart from the occasional book reading.
I prefer my 11" MBA for almost everything when I am commuting. When at home I use my 15" rMBP. I haven't decided yet and I will wait for today's event to make up my mind. I might get the mini, if it gets a retina display.
One thing is sure: if somebody asked me which device I would give up using, it would be the iPad.