I have really shot all the different guns I would like to shoot. There are really no more that I would like to shoot. I have never shot a full-auto. However, I have seen plenty of videos of people shooting them, and that is enough for me to see, I don't feel I am missing out on the experience of shooting one.
The same holds true for a gun with a silencer. It would be nice to own one so I could pick off varmints in my yard without bothering the neighbors, however, short of that, I can see in the videos how nice they work. I don't have the urge or want to shoot one. When I shoot anything on my property, I am completely legal, so the neighbors who may not like it can be angry with me for all I care, I am still going to try to be friendly to them!
NOW, Had you asked me that question twenty to forty years ago, I would most likely name off a few guns. In my older age, I am becoming very satisfied with what I have (which is sometimes difficult in this dog-eat-dog world full of lust and riches). Wanting to shoot something I do not have would be akin to wanting anything that someone else has which I don't. I have reserved myself to the fact that there are things I will most likely never own, but that is OK.
It would be fun to own a really fast and powerful car, brand new. I'll settle with my ten year old truck.