I am a first year and so far it has had its ups and downs but at the end of the day I do not regret my choice at all! Medical school is difficult academically, mentally and socially and is definitely a commitment. You must be sure this is what you want to do because the reward is delayed but the fulfillment is great! The MCAT was a feat in its own right. Take it seriously and study in advance to your test date. It is quite long (~7 hrs) and is a good prep for the stamina needed in med school.