Pilot with similar circumstances to you are usually shyed away from by the airlines. 3100 over 12 years is flying 250+ hours per year or 25 hours per month. That is a ton of flying for a private pilot. I fly about 250-300 hours per year as a corporate pilot.
If you interview you better have a great explanation on how you accumulated so much time without being commercial or owning a plane.
I would get a new log book and put some more reasonalbe times in there.
Smells fishy.