When I retired almost 5 years ago, I had a mortgage and a new truck payment. I could have paid them off but it would have taken a good chunk of my retirement savings. Not knowing how long I'd live, I figured it was easier to continue to make payments as I was able to do it without any problems. That way, my retirement savings would not deplete.
After a couple years, I saw exactly what it cost me to live and I figured I could pay the mortgage and truck off without a problem.
Now I'm debt free, still have some invested savings (not as much as before, but enough) and am doing all right.
It's amazing how little it costs to live when you have no debt. I'm actually living off my SS income, not touching my savings, and still have some money left over every month.
When you are debt free, it's a great feeling.
Pay off whatever you can but ALWAYS put away money for your retirement.... as much as you can. If I hadn't started salting away money when I was in my 20's, albeit just a little at that time, things would have been different today.