Am I being selfish

Okay so here it goes my hubby has been having a difficult time finding a stable job. He has been in between jobs for the past year. He does not have a degree and very minimal job experience. We have talked about his going to school to get a career I helped him with the initial process of registering and getting financial aid. Last minute he decided it was going to take too long so he didn’t move forward. A month later he wants to get his commercial license I help him through the process and supported the idea. Things fell through and the idea faded. He interviewed to join the Army great I am all in it and will wait for him if he were to get stationed elsewhere. Now he wants to become a flight attendant, that’s where I put a stop and said I wouldn’t want my future husband to be absent in our relationship and nevertheless absent in our future kids lives. I want my significant other to be present and build together, do parenting together not for him to be out traveling all the time and missing out on everything. He threw a fit on how I am only worried about what’s in my best interest, that I only care about my problems, that I am selfish that I don’t want him to succeed that all I care about is having him at home and don’t care about him trying to make a living. Is it selfish of me not supporting him in becoming a flight attendant?