What experiment? Unlike medicine, vaccines use the body's own mechanism just the way the body itself uses it. By exposing the body to something potentially dangerous, the only difference to "natural" infection is that in the latter case the body will take damage, sometimes incurable damage, before figuring out which proteins belong to the enemy. Vaccines do the same just without, or with way less risk of damage.
Experiments on unconsenting, let alone non-consenting, randoms are bad.
Telling people they have to obey health rules of society in order to be part of that society, is universal.
Consider why we wear clothes, and that even nudist colonies want members to have a towl for where they sit, in order to prevent what is for everyone else a "just you" problem: skidmarks.
Yep, a random one, and one where a) you take damage before the body figures it out, and b) it's pretty random which protein the immune system manages to identify (basically: The first one which identifies the virus), which may as well be one which changes widely so that even if you get immunity to your current infection you may not be immune to the variant someone else harbors. Whereas vaccines try to expose the body to the most stable proteins, for longer protection.
