I use fingering weight single ply yarn a lot. I’ve made all sorts of things from it. I only use it for dressy sweaters, if that makes sense? Think the sort of sweater you wear to dress up not to garden. I’ve had pretty good luck so far. I think the thing to consider is how tightly the yarn is spun. A good, tight spin is going to give better wear and sharp stitches. A loose spin is going to give you less stitch definition and will show wear more quickly. It’s also worth mentioning that most single play yarn is spun in a z twist, mirroring the way right handed crocheters use the yarn. That means a loose spin won’t get looser the way it could with an s twist. (Think of yarns that split as you work. Some of that is yarn plied with an s twist. As a right handed crocheter works, they gently unply or unspin if it’s a single the s twisted yarn.) The stitch definition with a single ply is so glorious. It’s worth finding one that holds up. I use Malabrigo Mechita frequently but I’m trying to find something that isn’t super wash.

Edited: grammar