Like most posters mentioned here, it's about quality of life in the long run.

What are you going to do with your Captain's rank if you get it in 2 years? Go apply to DL or SWA in 3 years? Or brag about your 4 bars to a bar chick across your motel?

15 or so years as an FO at SWA/DL is better than an regional airline like yours. Haven't you met a 20 year B777/747 FO at DL/UAL that can hold A330/B767/757 CA?

Looks like it's your first jet plane from flying a B1900. It shows rookie!