Do you save contacts in your phone?

Several years ago my wife and I joined a new church and they immediately put us to work.  We're on several committees and I have been asked by the pastor to be on the deacons board.  Our church sends out emails and text messages to keep its members informed of church events and special occasions like member's birthdays and things like that.  In an attempt to get to know and remember these people when I get the emails about members birthdays or about someone sick or possibly a death notification I'll put that member's name in my phone.  Again, I'm trying to get to know the members on a first name basis.  My wife doesn't.  She rarely saves anyone's numbers or rarely sends out a birthday text or condolence message.  I'm not saying she has to but I think it's just common courtesy.  When her b-day came around she got a ton of texts from other church members and she didn't save anyone's number.  We'll be talking and I'll ask her if she saw the text from whomever and she'll normally say, "Who?"  Or we'll get included in a group text and she won't know who sent it or who else is in the group.  She doesn't see the importance of saving people's name and numbers in her phone but she's always asking "whose number is this?"  My wife doesn't make friends easily but I feel like she's not really trying either.  Am I wrong to think that in certain settings you should save people's names and numbers in your phone whether you chat with them on the regular or not?  Or is it just something I do?