Hmm...James, I hate to correct you, but light and radio both travel at the same speed, 186,282 mi/sec in a vacuum.
Both are forms of electromagnetic radiation, only different wavelengths. All forms of ER are photons, depending on whether or not you believe in the theory of quantum mechanics. If not, then they are still all waves of the same type, only then you run into a little problem that light behaves as both waves and particles, as does radio.

I agree with you, though. All those "alien visitation" idiots are wrong, but just because they haven't been here doesn't mean that there isn't life elsewhere.