While your standing altitude may keep you from the cockpit of an F-16, it shouldn't present a problem in most commercial venues. I know a number of tall pilots, each of whom has done very well in his or her career.
I can't speak to you as a giant, because I'm not; in fact I'm the opposite. I can speak to your question as the observer of a number of tall pilots, however, and can say with some confidence that it shouldn't impede you unless your'e seeking employment in a tiny cockpit.
There aren't a lot of pilot jobs in which you're standing on the job, anyway, so I wouldn't feel too concerned about your inseam.