You can want those things, but outside of nuclear weapons they don't actually exist. Practical and effective conventional (non-nuclear) EMP weapons remain in the sci-fi realm.
https://en.wikipedia.org/wiki/Explosively_pumped_flux_compre...
Also I don't want them, nmobody wants them. They will mess up all your own stuff just as good as the enemies and piss off the entire world with the EM noise.
Yes, I am aware of those experiments. They are not really effective because the pulse range is miniscule. So you're not making any sense.