What were the advantages and disadvantages of biotechnology to us?

Answer 1

Medicine, it can help us overcome diseases, and cure the uncurable. However, it can also be used to create super-viruses with the potential to wipe out the entire world population. It can be considered good, in the right hands (which in our days, there isn't any)

Agriculture, it's more commonly known as Genetically Engineering. Yes, it may help us produce more food to feed the world, since we can now modify the seeds to be 'disease-free' but again in doing so it could actually create a super-virus which could have the opposite effects and wipe out our food population. Also though the effects of eating genetically modified food over a long period of time is still unknown.

As for farming, it just creates a lot of controversary, whether or not GM crops are good or bad. And whether or not the public is willing to accept that the food they're eating has been tampered with by a guy in a white-coat.

In truth Bioltechnology is too big a subject to discuss on such small turns.

For me though it can be good and can be bad, it depends how they use or abuse it.