[ubertakter]

I don't think everyone's getting one just because they are afraid. However, even very low probability events with very severe consequences may warrant having some kind of automatic emergency beacon... although in retrospect I guess this is exactly what you are saying. Eh, maybe this will be useful to someone anyway.

Think of it in terms of a risk assessment[1]. If you are engaging in an activity, you should look at the probability of injury and then the consequences if that occurs.

For example, I'm going mountain biking by myself. The area I'm riding in has a loose surface, but no extreme hills or other features. So it's somewhat likely I'll fall, but the consequence of that won't be extreme. Conversely, I'm riding in a hilly area with a rough but grippy surface. Relatively, the probability of a fall may be lower, but the consequence could be much higher.

Using this type of not-exactly-quantitative reasoning, depending on what you are doing (and the consequences of something going wrong), it may be very reasonable to buy a smart watch or something similar just for this purpose.

[1]A not exactly good article on risk matrix use. Also search for "5x5 risk matrix" (NASA probably has a good reference). https://en.wikipedia.org/wiki/Risk_matrix