The main thing* holding back this is that we don't understand the human genome enough to make really useful edits. It's very rare that there's a change that would be better done with germline engineering than somatic cell engineering or gene therapy. One day that won't be true however, and that's when the problems will really begin. To me the strongest non-religious argument against doing this is that it will further…
> I think we have no choice but to proceed slowly, cautiously, but under full transparency. but if there's any slight advantage to be had by going faster (e.g., there's a moratorium on editing certain traits), then those who would disregard the "rules" may gain and therefore, create a black-market anyway. I think the only reasonable thing to do is to have unfetted access, and the lowest possible price point. Then let…
Proliferation of nuclear-weapon technology has been somewhat effective. Because it's hugely technical and resource intensive. But CRISPR, not so much.