um...you have it, why not use it
. It's not like you're thinking of going out to buy it.
Personally, I loved my wifi; it worked fine and did what I wanted it to do; The touch was an extravagant buy for me, but one I don't regret as the touch is an improvement over the wifi in a number of areas (weight, speed, features). If you were debating buying it, I'm sure people could give you arguments both for and against, but since you already have it, there's really no decision to make