Personally, and without any knowledge of the cookware you are talking about, if you have survived this long without them, and you aren't planning a change in your cooking patterns, then no you don't need them. Whether you want them tho is a vastly different point.
Do you feel that when you cook, you are missing something in the equipment line of which one of these purchases will fill that hole? Have you got a use for them or would you just be using them because they are there?
Do the items come with a sample recipe? If so, do you think you can cook the said same recipes with the cookware you previously had? A wok is used for stirfries but it doesn't mean that you have to have one if you own a frypan.
I have half a dozen frypans and something similar in saucepans, all of varying sizes etc. I also have a pasta pan with strainers and stuff, a Dutch oven and a wok. I have too much stuff. Every so often I fancy getting something else but in truth, I am unlikely to need it on more than the odd occasion, irrespective of what it is, so I won't buy it.
I think you need to be quite dedicated to your cause to need some things, and only you can determine whether you are on that path or not.
Having said all of the above, it's still fun to get all the bits and pieces, so if you want it and can afford it, why not keep it!
