Medicine is term used for drugs that contains chemical with different composition and used for healthcare like treatment of illness and fulfilling deficiency of nutritions , etc.
As the medical science is growing at exponential rate , there is cure for every tiny things which is not even considered as health problem. Now researcher are exploring the medical science to cure of every senses and part of human body by surgery and medicine. But people are using that as a glamourising tool for there body and ready to give lot of money . That become the reason of rise in personalized medication based on there specific genetic and treatment of possible healthcare issue that they may face in future. It can be prevent a upcoming disease and may be a pandemic (like corona virus) but the changes are very less if they work on personalize medications.
A general medicinal reasearch can be more effective because it is able to treat every person in the earth (ideally) which includes the individual that take personal and genetical treatments . And it help to prevent healthcare issue at massive level .
The next question rises should we focus on finding cure for existing illnesses or we should predict the illness that can strangle the world and find cure for it . Actually both are equally important, we should not be asking the question, current illness or future illness, it should be current illness and future illness. We have to consider both and find cure in parallel. Preventing cure from future may be the reason of solved problem of present someday in future.
So if we talk about a treating people generally vs genetically, treating people generally is more beneficial compare to genetically with focusing on both possible illness and ongoing diseases.This approach can best and beneficial for maximum people but in future if there is enough technology that can handle massive workload in healthcare center. Then focusing of personalized (genetical treatments) is beneficial.