[Same here] From what I remember, the energy released by γ-radiation is quite low. I'm still not convinced that just because something emits γ-radiation, short

[Same here] From what I remember, the energy released by γ-radiation is quite low. I'm still not convinced that just because something emits γ-radiation, short or long half life, it has an inherently meaningful energy potential. α- and β-radiation: sure. But γ? It's harmful to humans for very different reasons than fissile material is a useful energy source, isn't it? Or am I completely misremembering this all?