1. Plenty of opportunities upon graduating
This reason is rarely stressed properly, but it truly is so. After gradutation there is a broad range of opportunities for future job. In case you find none of the possibilities appealing, you can combine them or invent your own path of further specialization. Upon finishing medical college you can choose to work in hospitals, science institutes, public health care or be part of the medical segment of some other science. There are doctors who are managing health care costs in economical sciences, or cooperate as a part of judicial sciences in proving medical errors and patients' rights.
Be that as it may, do not worry in case you do not see yourself as a future pediatrist or surgeon; you have six years to decide what exactly you are interested in.
2. Working with people
A lot of students name working with people as their primary reason to study medicine. If you are a people person, medicine is the right choice for you. It is of vital importance to stress that to work with people you absolutely must have a great deal of tolerance towards endangered social groups, e.g. the old and disabled.
In course of your studies you will be able to improve this skill even if you do not have a particularly developed affinty towards working with people. During your studies, but also later in hospitals, you will meet a lot of people besides patients - patients' families, medical staff, technicians, administrators etc. As a part of you medical training you will also learn not to form bonds towards patients and their diagnoses or faiths, which is an extremely delicate problem especially when it comes to children.
3. The ability to help people directly and make them happier
This was my main reason for enrolling into medical college. The progress of the human kind and civilization is the purpose of almost all of the college programmes. Medicine participates in this process in the most direct way. The most doctors would say that there is no greater joy than the one you feel when you manage to help a very sick patient or when a group of scientists discovers a new medicine for a certain disease.