It sounds like it is meaningful for you, and in that case, you should go ahead and do it.
I think the moral of the story is that it's dangerous to bank on something as a Golden Ticket into medical school, or to view something as a necessity where either of the things can cause a negative impact to your application.
For instance, pre-meds still probably think that mission trips are a sure-fire way to get into medical school. By pursuing this activity with that mindset, they are burning a whole lot of money, but more importantly, are pushing aside activities that would actually be beneficial, or sacrificing important study time.
Also, imagine if a doctor that you're shadowing, and view as a role model, tells you that it's uber important to become an EMT, because he and his friends did that to get into medical school. You might spend a lot of time scrambling to do this, where you might end up sacrificing more application helping ECs or your grades as a result.
Sorry, I'm a little scatter-brained here, so I don't know if I'm answering your question. But I guess another way to approach it is
if it's meaningful to you, then go ahead and do it. Unfortunately, pre-meds do a lot of things that are special to them, which makes them feel very special, which makes them feel like their application is special; but in the end, ADCOMs might not see it as anything special. So it's best not to bet on something as a Golden Ticket, and I'm not saying that you are by any means.
You only have so much time to do things, and a check-list of things that have been getting pre-meds into medical schools for years. It's best for people to allocate their time to where it matters, so they can have a competitive mix of stats and ECs, which is disguised as "doing things you're passionate about" on SDN.
If I didn't answer your question at all, I apologize. I've been studying neuro all day and it's been frying my brain ironically.
EDIT: Oh jeeze, you weren't asking a question in the first place! Oy!