This question pertains to saved contacts on a smartphone (Android in my case). I find I have a lot I don't use but don't want to get rid of them because if I ever go through text messages it would be harder to tell who it's from.
Here is an example. I have a contact Joe Doe. I often text and call him. There is another Joe, Joe Blow. I only have Joe Blow in my contacts because I was thinking of renting a home from him. I don't want to delete Joe Blow on the off chance I may be searching through some old text messages and would wonder who it's from.
It gets worse with names like David. I have 6 David's, only 3 of which I use.
Maybe I can start using last names to search if they're unique enough.