Look, I'm bitter and angry about my situation, so take this with a grain of salt...
I feel like the incompatibility we had in regards to savings, financial discipline, etc., should have been a much bigger red flag to me. If you are having these sorts of doubts, I would think long and hard before making the commitment that goes along with marriage. If you do get married, and it doesn't work out, just make sure you divorce before the 10 year mark, or you will have no set end to spousal support. If you divorce before 10 years, you will normally pay spousal support for half the length of the marriage (about 4 years in my case). If you have kids, all bets are off and you will likely be on the hook for spousal, child support,(plus half of medical expenses, extra-curricular activities, and child care costs while your ex-spouse works - this is on top of monthly child support), you will be required to maintain health insurance for the children, you may get your wages garnished, you may get Smith-Ostler riders for 12% of any bonus or unexpected income towards more child support, legal fees, therapist fees (very easy to have a therapy order in place for children and/or the parent(s)), etc.
That said, anything you have saved before marriage is yours to keep if you divorce, so there's that aspect to keep in mind.