I've further reflected on my misgivings of my choices; I've come to realize a mojor reason for my melancholy attitude towards my decision to pursue school first is largely because I'm from a very small town. All of my friends, which was basically my whole grade as is the nature of very small classes, are doing something different. I realized that lots of my doubt comes from this seeming complete seperation between life before university and life after.
This realization makes me wonder, at least of myself, if it isn't more of a regret of losing those connections almost completely, than it is of regretting what path I have decided to walk down. Being young, I have it fresh in my mind all the horrible summer and part time jobs I have done to support myself and get myself through school. In all of those experiences, generally the most memorable came from working with people who made it interesting, instead of what the job was. Even when I've had jobs that I wanted, if they were with people who just generally sucked, the job was not much fun.
This sounds wrong coming from someone who is in engineering, but it seems to me that the relationships and experiences between the people in your life are much more important to your happiness with your life, than the physical and visceral experiences, not to mention psychedelic ones.