I never wore one for the longest time for that same reason. Now that I do, nobody seems to notice. Only once a classmate came up & asked if I was allergic to peanuts since she had a peanut butter sandwich. Now I feel like it was me who perceived being labeled.
i feel they are very necessary and you are not labelling yourself. both of my kids have them. my daughter(8) has asthma and my son(13) has epilepsy and migraines. they have never had a any complaints from school kids or anyone.they dont feel that people are labelling them at all. ever so often someone will ask them about them and they just tell it like it is...no issues, they are quite styling nowadays anyhow.
i should have one my self and would wear it proudly but cant afford a third membership in the house to medic alert. haha.
in my opinion, not wearing them when needed says that you are ashamed to have what you have and you shouldnt be. just about every one in the whole world has some issue of some degee and they choose to hide it or show it. everyone i know that hides their medical issues, feelings, problems....suffer alone. those who tend to reach out and share their issues heal faster and feel better as it opens it up to discussion. that is when one feels they arent alone and most things we try to hide are very common to alot of people.
sorry to ramble on, just how i feel and hope it helps you !