Darth Wong wrote: we are interfering with the process of evolution.
By its own nature, evolution
is interference. That is, in fact, how evolution works. Factors in an environment will interfere with an organism via obstacles (predators, barriers, etc); those who succumb to the obstacles die off and those who overcome the obstacles ensure the survival of the species. By protecting those whose genetics would not otherwise allow them to survive and by altering our environment, we are becoming agents of our own evolution, directing it for better or worse.
Right now, GE would be best used to uplift the weak instead of making the strong even more powerful. Simply correct the diseases and leave everything else alone. (Yes, even to me that sounds awfully naive, especially when GEers start finding flaws in everything and begin rewriting our genome)
Genetic engineering will eventually be an absolute necessity to allow us to adapt to ever-changing conditions, especially when we start reaching out beyond our frontiers (i.e. space, other planets). Our technology will only carry us so far, we will have to change too, sooner or later.
(on a side note: Am I making any sense? I hate it when I ramble on a topic)