Mind your own business - you don't know what situation my house is in at all. All the contractors in town here who have seen the house have never commented on the door size, neither did anybody else on this site until you. Maybe it's hard for you to get in and out of a 20" door, but for most people almost two feet is plenty.
This is a public forum & you asked for advice
If you don't like that advice you are free to not follow it
But don't pull an attitude & tell people to mind their own business
That's not what this site is about
I had one 24" door at my last house & redid the doorway to fit a 30" door
Usually a 32" door is the min I will put in
All of my doors leading outside are 36"
Any major door (or opening) leading to another area is also 36" Min
You shouldn't have to turn sideways to walk thru a door