Hold weight? It really shouldn't be bearing any weight no matter how it is constructed. And there are drawbacks to every design: Gibsons, with set necks, usually have angled headstocks which can break. Fenders can get stripped if you unbolt the neck a lot. They should all 'last' long provided you take care of it. Guitars that are 70 years old are still being played.
By sturdy, I think of resonance in the neck while strumming chords.
Which neck joint type is more sturdy and will hold more weight, bolt-on or set-in(glued) neck? Also which one will last longer?
I meant the weight of the body of the electric guitar.