Pharmacogenetics is the study of how genes affect a person's response to drugs. This relatively new field allows us to combine pharmacology and genomics to develop effective and safe medication dosages which are specific to an individual's DNA makeup. This means minimizing side effects from the drugs!
So even though humans cannot (yet) choose or alter their genetic coding, we are (except in a few extreme instances) able to decide what we want to do with that coding. So do we give in to every little impulse? Or do we place value on more than just what seems fun and interesting in the moment? Despite genetic predispositions, the choice is ours to make.
Here's my deepest concern about the Global Family Reunion: Has the marketing of it been so successful that we're in danger of changing the definition of genealogy? The interest in famous cousins has always been there, but has its prominence in the GFR's PR campaign been such that many will think that's the whole point?