It is definitely ok to not have a stash. I have a small stash and it takes up way more room then I'm comfortable with. And it does keep me from buying more fabric. 1, I don't have anymore room to store it, 2, I don't NEED it, 3, and sometimes, it does keep me from creating. (Sometimes, just too many choices.) And, the worst, what I loved before, I don't love all of it now. My tastes have changed. But, I am not made of money so I will find a way to use it. And, I will probably fall back in love with it by the time I'm done. lol (Or, at least I hope so.)
I have cleared out my stash twice before donating my unwanted fabrics and scraps to charity. And, I have only been sorry to have given up just a few pieces that I probably can use now. But, that's ok. I just think about all the good that the charity's are doing for other people and move on from that thought.
Do what your comfortable with. And enjoy your the time you do spend creating.
