Face the fact eventually you will need a gear.. Iphone7 definitely can shoot but will you take in and out of your pocket everytime when you want to shoot?

What about the tight angles where you do not want it to be wide? The moments you want to separate your subject with the not so pretty background? What about with situation where light isn't sufficient?

Well i guess you have not shoot enough. Continue shooting eventually you know when you will need this camera. When you need that lens or perhaps that flash.