1. Any new technology has its set of advantage and disadvantage. However you cannot condemn a beneficial technology because of the possibal misuse. the simple solution is to use the technology with great caution.
2. They are topic of much deliberation and tension; very prevalent in some parts of the world and banned in others.
3. untimately, GMO's are still a relatively premature technology and in the developmental process. Only time will reveal their untimate effect on humens.