I very rarely try donuts. They are actually kind of difficult to do, the few tries I've made have been okay at best, kind of greasy though and not terribly fluffy.
Coffee cake is another story, I'm pretty decent at that.
Cooking isn't hard, most of it is just basic techniques and a lot of attention to detail. You don't need a ton of gadgets either, just a good cutting board, a good quality chef's knife in the eight inch range (yes size matters), a good quality paring knife, a honing steel and patience.
Baking is the thing where you have to be super accurate, it is more science than art. Recipes are really more akin to formulas, whereas savory recipes can be more easily modified or adapted to reflect your own taste.