Sorry to have snipped most of your post, especially as I thoroughly agree with the gist of it.
But this particular part is the source of a lot of aggravation in these discussions. It's often claimed that GM is little (or nothing) more than "rapid selective breeding" which, it's true, we've been doing for centuries.
I've just been reading an interesting snippet about how the enzyme used to curdle milk (rennet, essentially) in cheese production these days is generated by certain bacteria and yeasts. This is very handy as there aren't many calves' stomachs easily available. But I'd say that no amount of selective breeding between cows and the bugs (

) could have developed that DNA sequence in the micro-organisms. The gene was spliced in there directly from a totally unrelated source organism.
Can we truthfully say that every GM crop could have been developed more slowly by conventional means?