It's not about conscientiousness, it's about quality of information. When you buy something for you, you know your exact needs and how to evaluate compromises.

It's not about conscientiousness, it's about quality of information. When you buy something for you, you know your exact needs and how to evaluate compromises. For gifts you care, but not as much since you lack significant information. You get something that is "good enough". For close friends you'll land a great gift in value and cost, but when you don't know the person very much, the gift usually tends to become an Amazon gift card or the like, since any guess may be a poor choice. For example, many years ago I bought a projector with all the money I had saved (still student, at my parents), and I projected films on the wall, which was suboptimal but I was fine with that. On my birthday my friends got a sliding screen to hang from the ceiling! And I thank them very much for it! But even if they took the measures and all while visiting me, they missed the fact that the ceiling was ultra light drywall, rendering the gift useless.