You may in your heart feel like this is an absolute, but your record on paper tells an entirely different story and that's what is going to precede you for a long, long time. You will always have to answer yes to that question on an application and it will probably keep you from getting the interview for a while. A squeaky clean record and lots of letters of recommendation may alleviate some of that, but you've got your work cut out for you. If you do find yourself in an interview, you'll have some really tough questions to answer. They will need to know, that you can make it through minimal training, and you'll have a tough time talking your way out from under this black cloud. Instructing, Part 135, flying boxes at night, all entirely within the realm of possibility. However flying a 121 carrier is a long way down the road for you IMO. The regionals are way to image concious right now, plus they can't afford to babysit new hires to make sure they can make it through training. As far as a shot at the majors, the military is poised for a large exodus of talented and experienced guys, and the regionals are awash with high time RJ guys with squeaky clean records. I just don't see you breaking out of that group.

I had a student years ago, that was passed on to me from multiple instructors that just could not get him to a position to pass the instrument PTS. He could always fix one problem from one to the next, but couldn't put together a single succesful flight from end to end. He was something like 100 hours into his instrument rating when I finally had to sit him down and tell him to take a week off and really take a hard look at whether he felt like he could go on to Commercial, Multi, CFI, ATP, etc standards. I had never given up on a student, and I told him I wouldn't give up on him, but he was burning through piles of cash and I couldn't in good concious keep plugging him away without him knowing what he was getting himself into. He came back a few days later and decided to change majors, switched to physics. Ultimately landed a job at a major defense contractor and bought his own airplane for day time use only. He actually thanked me for that talk a few years later. He makes a ton of cash, has a stable lifestyle, and flies when he wants and is thinking about reattacking the intrument ticket at his own pace.

Take a hard look at where you want to be in 10, 20, 30 years from now. If making minimum wage and bouncing from job to job hoping to break through that cieling is really something you think you can endure, for years, then press. However if you want to be financially secure, have cash in the bank, a nice house, raise a family, have stability... then I would seriously consider abandoning this and going to school. Get a degree, start a business, do something that you can enjoy that may allow you to buy your own airplane, or freely rent, and fly to your own agenda.

You may love flying, you may think you'll love the job, but it will never love you back.