Tell us what you envision doing on the iPad and we could tell you if your expectations will be met.
For me it's the most useful gadget I have. My computers are great, but the pad is so fast, portable, quiet, and instantly on that it's my go to device everytime.
What you realise with the iPad is that computers force you into a single posture, in front of a keyboard and screen. With the iPad you can be lounging in the garden, lying in bed, sprawled on the floor, leaning against a wall etc., as posture is no longer relevant.
Just get comfortable and you're immediately online.