My kids are totally computer literate, and I'm happy for them.
But I'm not, and, at 66, I am too lazy to try and learn "all" about them now, so I don't see 3D printing in my future, even though my across the street neighbor uses them at work. And I'm sure my unease with working on the computer colors my attitude, to a large degree.
But the real reason I will pass on them is, as a hobbyist, I love carving out my cranks and swimbaits. It's fun and satisfying.
For me, it's like actually fishing, instead of watching fishing on TV.