Adam, I hope you're still listening.
First off, the above post (skiddriver) was excellent. Good advice, and stats to give to your parents as proof.
Secondly, your parents said to listen to them and not to people on the net. Well, these people on the net are REAL airline pilots working in the industry, unlike your parents. I really doubt you will find any different opinions from asking pilots in person. Everyone here has gone, or is going through, your situation. I can sympathize with you because my parents felt the same way. But I soon realized that my parents really know nothing about what it takes to become a pilot. And I'm sure your parents know zilch too about pilots.
Thirdly, if you failed to read my first post (1st page) I will reiterate what I mentioned.... If I was in your shoes, I would either:
(1) Join the millitary and get a paid education, paid flight training, and guarenteed flying job.
(2) Go to community college now while you fly. After getting a diploma, work and build some income. Than go back to college or finish your degree through correspondence.
I would highly recommend you not put off the degree. If you cannot afford it right now, no problem. Work and earn some cash, than go to school. So many people put off the degree... it is REALLY difficult to go back to school after taking a break. Also, doing an entire 4 year degree part time while you work is pretty impossible... that will take 8 years, at the absolute minimum.
So, I think the best thing for you after reading your posts would be to at least go to community college, get a diploma, earn some income, and than transfer later on.
On a separate note... you mentionned you cannot handle studying for 2 hard things at the same time. This will be a problem than if you plan to work as a pilot and complete a degree on the side. When you work as a pilot, the studying will NOT stop. Especially if you are a CFI. You will constantly have to redo proficiency training, which means hitting the books on your time off. I'm sure you've heard this phrase many times... "You're training is never over in this business."
I wish you luck in your decision Adam. In the end, only you can make this decision. You can choose to listen to real airline pilots on this forum or you can ignore them. 17 is a tough age to be and I think you are starting to realize why!
Whatever you decide, do NOT put off school. At least go to comm college and earn a diploma. Fly on the side, part time. This is the a good solution, in my opinion.