Monsanto's "Roundup Ready" crops are not the only place roundup (glyphosate) is used.
If engineering herbicide resistance into plants is such a bad thing, what's your alternative? Do you want to return to the methods we used before we discovered modern genetics?
Monsanto has done some nasty things in the modern era, but their genetics (including their "Roundup Ready" products) are not one of them. If you want to complain about Monsanto, I suggest starting with the changes that Romney (Bain & Company) made to the companies business practices.
Your first comment seems to suggest that people who are pro-GMOs will be going against these findings. GMOs and weed killers are two parts of Monsanto's business model, but as far as the science behind the two goes there is virtually nothing in common.