I agree. From what I have seen, it's not something I would use often. There may be one or two things that can be done with 3D Touch that I don't know about but will end up using. But for now it's just a gimmick to me.
On the flip side, I am really loving the Slide Over view on my iPad Mini 2 as well as that new way to move the cursor by pressing on the keyboard.
I really love it. Especially for turning the keyboard into a trackpad, selecting text etc. LOVE it. Does it need some fine-tuning? Absolutely. But the future is here, and it will involve 3D Touch.