This thread has already been beat to death but yeah another vote to stay put.

Delta has its known issues but it's a well run company that makes a crap ton of money. Kirby has big plans but UAL is playing catchup and may or may not pull it off before the music stops in the economy. I wouldn't want to be left standing at the only legacy airline that has furloughed twice in my nearly 30 year career. Sure they have tons of jets on order but they also have tons of old clunkers that could get parked very quickly if things go south. Don't believe airline promises until you're sitting in the cockpit of them.

Throwing away 1500 numbers and going back to the bottom of a very very long list would be nuts. Another thing to think about is that comes with going through probation again and the schoolhouse at a new airline. Success is never guaranteed and I've heard United's probation is a little more serious than Delta's

Also as others have said read the room and get some perspective. At your age back in the 90s most of us were begging for instructor jobs at $10/hr or less or flying checks in the middle of the night in a broken down POS that you hoped would make it (do you even know what a check is or why we flew them?). You won the lottery getting hired at Delta in your 20s with low time. Stop being greedy and accept the gift you got and be happy with it. You're going to have an amazing career and retire from the left seat of a WB as a millionaire. That's something us old fart lost decade pilots will never see. Don't blow it by hopping around for no good reason.