Electrode Prime is very underrated IMO. Discarding off the top and attaching energy found can be good for decks built around it(i.e.Scizor Prime,Steelix Prime,Tyranitar SF).
Also just because your discarding non-energy cards, you could say that they were already going to be their eventually. LOL
Seriously, all non-energy cards can be recovered in someway:
Pokemon-Pokemon Rescue/Plamer's Contribution/Flower Shop Lady
Trainer-Junk Arm/Good Rod
Supporter-VS Seeker
As you can see, it wouldn't be a total lost if your prepared.