Although I agree with that commentary, any more losses, and American public opinion would generally kill NASA. I don't think that the U.S. population believes in acceptable risk anymore.
Anyway; I can see their point:
"You can't get to the station from a Hubble orbit. It is physically impossible," he said.
Although; they do have the solution, it will increase the cost.
Engineers at NASA are considering prepping two shuttles in parallel, with the second shuttle waiting on the other launch pad
Overall; I vote they go. We are not going anywhere in space without taking some risks.

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Numbers are not case sensitive. (me)