The broad view: First, life is precious. Our time here on earth is extremely limited, and despite our best efforts, we have only begun to improve and increase our time here. Every time I hear about stories like Ebenezer Scrooge or rich philanthropists donating their money for secure a legacy, I am reminded of our inherent mortality and life is one of the few things that you cannot buy. Any society where the basic needs of food, shelter, and entertainment are largely met, an increasing amount of money is spent on healthcare. I think it is no coincidence that the proportion of GDP spent on healthcare correlates extremely well with the GDP proper. This is in part due to extremely poor diminishing returns – hypothetically $10m spent on running water can increase the life expectancy of 10,000+ people by more than 20 years, but $10m can fund at most 100 open heart surgeries (which here the 5 year mortality benefit is only marginal). But with increases in the standard of living, expectations of health increase. Barring catastrophic changes, our emphasis on health will not diminish. If you want to work in a field of high importance, where effort will be rewarded, there are many challenges, and technology is constantly changing and improving, medicine is a good choice.
A ground level perspective: Second, medicine is difficult. Undoubtedly there are many challenges in the path to become and the practice of a physician. There are many problems in the structure of healthcare, there is decreasing independence, and the training path is only lengthening as medicine becomes more and more specialized, but there are many benefits and joys unique to the medical profession. You are privy to the breadth of human experience, from life to death, and are gifted with a perspective unparalleled in beauty and complexity. When you work with a cadaver for the first time, I hope you are overwhelmed by how inherently private and precious the gift is before you. I am convinced that are few experiences more acutely beautiful or overwhelming than helping someone overcome an illness or witnessing a birth or death. Biological science is an incredibly diverse, complicated, and fascinating field - as a physician, you can help facilitate the next big breakthrough or be part of its implementation. Technology will only facilitate and augment the physician’s ability to diagnose and treat disease – there will always be need for someone who understands and appreciates the mechanisms of the human body.
As a physician, you will be respected and will be compensated by your ability to help others. I am certain that medicine will be vastly different in ten and twenty years, but I think the things I mentioned above are constant. If you are passionate about science, appreciate the ability to help others, and willing to work hard, medicine can be a good choice. You don’t have to worry about it disappearing.