I have an "old' 12 PM. I hold on to it because it works and works well. Why would I change if it does what I need. I do have my truly old work 6 iphone that forwards all work and texts to my personal 12PM.
What is the reason you feel the need to update your phone?
I own a 12 mini, and will eventually replace the battery so I can use it for another two or three years. I'm still routinely getting 30 hours per charge, and sometimes up to 40.
I thought the exact same thing when I saw this thread listed, and I opened it to see if anyone else commented on that.
Seriously, an highly sophisticated tech device less than 3 years old being called "old"...