I too have been a PC user since the late 80's and had avoided all Apple products. However on a work trip from Australia to Houston last year, my laptop became unstable and I bought a Macbook, after seeing one used by a colleague, and then put win 7 on it. I can use it for my normal windows development but also with OSX
I then bought an iPhone to replace my Nokia which had been ruined when it went in to a lake playing golf.
I waited until the new iPad came out this year before making that step, as the iPad 2 had in my opinion a really crappy camera.
I have quite a few apps but the one that can almost justify the iPad on its own is logmein. THis allows me to run my PC remotely and means I can travel without taking a laptop but still have an emergency way of doing my work (at least minor stuff).
I am starting to learn how to write html5 apps and run them on my iPad. Just created a small one for managing my golf handicap so far.
I think its great. Get one.