Replying to Too Coo 4 Schoo?

...is typically not my style. But considering relevance and the magnitude of the decision, I thought I would run this by you guys. I'm a junior in college, and I'm thinking about dropping out. If you don't want to involve yourself in this thread, then don't involve yourself in this thread.

Reasons for dropping out:
1. I have a 2.4 GPA.
2. I live in Missouri where there are no mountains. This summer I worked in Colorado, and I have always been in love with that state.
3. I usually just drink and smoke on the weekends.
4. I am wasting my and my parents money.
5. I'm an intelligent guy who learns more on his own via books/firsthand experience.
6. I am an English and Journalism major, and I already know how to write (my professors tell me this).
7.(Non-technical/specific) degrees in America are a joke. It's just a status.
8. I am highly interested in jobs that involve outdoor recreation (I worked at a gear shop and guided climbing and biking tours).

Reasons for not dropping out:
1. I probably have four semesters left.
2. Regretting not getting a degree later.
3. Job opportunities.
4. Growing up too fast.
5. Disappointing my family.
6. I'm in a fraternity.

My two older brothers and my dad do not have degrees. They have secure jobs, happy families, and a good, healthy lifestyle. Only my oldest brother regrets not finishing his degree (dropped out just before his junior year at Kansas University), but he still sleeps at night. My dad is the most intellectual person I know, and he sarcastically made his way through high school. He is a writer, and a good one at that. In all honesty, I believe that school is interfering with my education. I'll admit that a lot of it is just me being too lazy to do the work. However, I am a productive person, and school seems to bring out the laziness in me more than anything. And I've told myself to sack up and just do it so many times, but the motivation is there for no more than a week.

This summer in Colorado, I experienced true independence for the first time. I was living by myself, supporting myself, making my own food, managing my own time, going on crazy climbs without asking what mom or dad thought, and associating myself with the type of people I want to be like. It felt damn good. I was happy and I was productive. I was even more intellectually involved--read and wrote more. Now my ass is being kicked by this system again, and I am out of control.

I am seeking some good honest advice, preferably from those who have lived and learned.