It's question begging because 'any sensible measure' is meant to exclude the subjective measure by which suicide bombers are valuing their own lives. The whole point is that their worldview -- what is important, what is to be valued during our brief time on earth, etc. -- is radically different than yours or mine.
And yet the only argument I seem to get in favor of the worldview that (I believe) you and I largely share is "C'mon. Don't be silly.", which might be rhetorically effective, but is not evidence based.
The important difference is that I am willing to accept that I believe it without proof. You see and the parent seem to need to claim it's 'scientific' and 'rational' to embrace a worldview which values life, freedom, knowledge, etc.
Empirically, its obvious. Most people on the planet value these things. Societies are under selection pressure like organisms. So these things must be advantageous to societies.
So you're willing abandon good and evil in favor of selection pressure? That is to say suicide bombers aren't wrong, they're just the light-colored moths of our day?
That's pure question begging.