Dropping out

Need some advice didn’t know where to go anyways I wanna drop out of high school and nobody supports me so I’m a little worried about it. I’ve been slacking in all my classes since online school has started and the pressure of school is killing me. I decided that I wanted to drop out and pursue my dreams for the next two years, which for me is getting my van, converting it to a home, and traveling the usa making money giving tarot readings. The goal is to come back when I’m 18 and get my GED so I can go to Arizona State and get my bachelors. This is the plan because I need either my ged or a 3.5 gpa to get into ASU and the gpa is not attainable right now so if I want to go to college I have to drop out. And when am I going to get a chance to be free again. High school, college, job, death. What is the point. I just want to travel and experience things. But my mom and my older brother think I’m being foolish and that I’m going to ruin my life if I drop out. I’m feeling very torn and I don’t know whether they’re right or not. I would really appreciate some other opinions, please