Should I join the military?

Basically my life is hitting me hard right now. I'm 19 and I'm still struggling to finish high school. I can't find a job (unless you count working at Mcdonalds for 4 hours a week a job) I have no marketable skills. I don't think I will be able to afford collage. I'm still living with my parents. And in general I'm not doing well. My step dad was in the military and he said it would be something I'm good at not good for me (as long as I could get into physical shape which I'm not in right now) And I've heard the perks from people who have enjoyed the military but I'm still not sure. Basically he thinks I don't like taking **** but I will if I need to and I will naturally try and get ahead so I don't need to deal with that so much anymore. Personally I'm not sure if it would go like that because I believe I have a natural talent of staying out of sight and mind of everyone and that is something I can't turn off. It's so bad my few friends in high school would nickname me ghost because I'm so invisible. (and it's the main reason I can't get more than 4 hours a week at Mcdonalds) I've been told for the average person the air force is probably the best option for someone like me. And I would like to be a programmer. I've been thinking about it for a while now and all I know for sure is my life can't continue like this. Should I join the military after I graduate?