Website: "Thanks for your purchase. Would you mind taking a survey?"
Me: Not at all.
/me doesn't fill in a field that didn't apply to me
Website: "This field is required."
Me: Well, none of it's required. I don't have to be here.
If your customers don't want to fill the whole survey form out, just double check that they're fine leaving parts empty, but let them submit it anyway.
If you won't let me skip 1 bad field, I may just bounce and you'd lose the whole response. 🤷♂️