i am not a pro but if Lufhansa took you on, they will probably give you a job at the end too, so you don't really need engineering degree, just go and enjoy your career, fly around the world and have all the nice girls.
I'd strongly recommend degree to people less fortunate than you. For example, guys who have little money and do it modular route in little schools etc. As in these circumstances, employment chances afterwards are slim and not having a good backup plan is like shooting yourself in the foot.