I think of it like this. I don't pay attention to lyrics in most music, I pay attention to the feel/tune. With friends, it's all about emotional connection, not my ability to recall facts. I honestly don't think one or the other is better or worse, it's just different. People show care differently.
For me, who has trouble with things that people often associate with caring (like yourself maybe), this acts as a crutch to help me show caring in a way that other people recognize but that isn't natural to me. I would actually argue that me investing into a program like this actually shows just how much I care that I want to make up for my natural capability with a pretty involved program.
Another side benefit, it's also really nice for acquaintances that you really want to keep up with, but because of irregular correspondence they are very easy to slip from memory.