Wouldn't worry about it, bud. Even if somehow nic is banned for recreational use, we'll still be able to source it from science houses. Just start building your diy chops. It's really not hard at all. Just play with recipes for a few weeks or months until you find something that approaches an ADV, then start minor iterations on it. Mine's custard. Hoo boy do I love the custards. So, I found a mix of custard and vanilla flavors that can ADV for me, and then I started adding lemon, or strawberry, or blueberry, or hazelnut, or cookie, or cheesecake, or, or, or, or... and I have dozens if not hundreds of vapable options to keep my palate from getting bored. Diy is easy, CHEAP!!!, and virtually unbannable, so long as you're the slightest bit creative.
Or you could go the route that many of our compatriots have and embrace the unflavored life. I've stated my reason for not digging that option so much (hint: to me it tastes like something that rhymes with mex tube...which isn't an unpleasant taste by a long stretch, but not what I'm looking to vape), but lots and lots of folk here dig it. And honestly, that seems to be the least risky vaping option, if you can find yourself...ahem...satisfied with the flavor.