GMO's aren't bad? "We have been mixing species for thousands of years?"
I have no problem with hybrids (mixing within a species), but I have a huge problem mixing insect DNA with plant DNA as just one example.
You have no problem with genetic engineering of food?
the thing is, we specifically choose which genes to put into the plants. We study exactly what it does, and what any possible affects are in the plant. When you eat something you break up the dna so as long as it doesn't create toxins it really doesn't matter what it does.
about 8% of human dna is from viruses, many of that is from random plants, animals, or bacteria.