My issue was, and maybe it was just because of the kind of Etsy store I have, is that it didn't really fit in what I was looking for. My profit margin just wasn't there and I know I'm not alone. If you start off with a shirt that costs $13 and add in shipping, that shirt is costing you at minimum $17, say you are selling the shirt for $22-$25, your profit is less than $10 per shirt. Where as I can get a blank shirt from All Day Shirts for less than $2 each, cut out my own design from my vinyl stash for less than $1 and all of the profit is mine.
I don't sell a lot of shirts or physical products anymore anyway so losing the POD (Print on Demand) part of my Etsy won't hurt my sales much. In fact, my plan is to take the designs that I did have on Printful, redo and revamp some of them so they are SVG's and sell those. That way I can share my designs with other crafters and not have any of the overhead once the design is complete.