Well coming from a school that focuses on these things, I'm definitely more for it. ;
In it's current stage I don't trust it to be used on humans but definitely in the near future I'm sure it will be immensely helpful in curing the many diseases thousands die from. (But of course that goes into the ethical issue of which is more important and should be focused on more...but I digress.)
Well in a primitive way it has already been used on food. (Corn and tomatoes anyone?) But food with added nutrients and better taste/quality is definitely something to look forward to!
Also, IMO, people shouldn't be opposed to it as some are. The purpose of genetic engineering is for the betterment of our lives and our future.
Though there are downsides. (Science of course isn't perfect and much can go wrong.)
But the benefits outweigh the disadvantages overall
My BioGenetics teacher better be proud of me for sticking up for this