Reasons include (but aren't limited to):
- Common use of toxic chemicals to control weeds and other pests for GMO seeds
So all this aside, it is now your turn to make your own decision. If you want to know more about GMOs, do a search for it online, or watch "Food Inc" or "The Future of Food". They are both interesting and great documentaries - not at all boring in my opinion. Note that they are both anti-GMO documentaries.
If you so choose and need a point in the right direction, my favorite seed company for GMO-free, chemical-free seeds is Baker Creek Heirloom Seeds. From what I can recall they haven't "signed" the safe seed pledge, but they still sell great seed without having to sign a pledge to prove it. I LOVE their stuff! A second favorite is Seed Savers Exchange. I'm sure there are others out there too, but these are my go-to companies that I really like.
It's time to do your research and make your choice! What do you think about GMO seeds?
This post has been linked to all these great blogs: