So crossing a street is not dangerous?
Of course crossing a street is dangerous. The offspring would be an F1 Hybrid, and you don't want to mess with such powerful and noisy cars.
So vaccination is dangerous too... or you can magically state that nobody in the world has allergic reactions to it.
Don't be an idiot. You are too intelligent to be an idiot.
If by 'dangerous', you mean there
is a risk attached, well, YES. Pretty much everything in life has an associated risk, and we all, by our behaviour, evaluate relative risk all the time.
Crossing a road is a good example. There is a risk of being run over. It doesn't happen often, and you usually take precautions, by choosing a place to cross that has good enough visibility so you can see and/or hear is traffic is approaching, and depend on your locomotory skills to cross over before any traffic might intersect your path. You are assuming drivers don't deliberately target you. And so on.
There is a small risk of being hit by a descending meteor. Most people don't decide to live permanently in the deepest possible mines to avoid being hit by meteors. So we are comfortable with the idea of accepting small risks to allow us to get on with our lives.
You don't know if you are going to be infected by a new disease unknown to science. Most people don't enclose themselves in sterile bubbles against that possibility. It's an unknown risk - how many unknown diseases are there out there?
Maybe you smoke, or drink alcohol, or eat food that contains carcinogenic ingredients. Your body deals with potentially cancerous cells all the time (cells with DNA abnormalities). Some are generated by cosmic radiation. Your body is really, really good at identifying misbehaving cells and killing them (or telling them to commit suicide), but you never know when one might get through the
process and become a metastatic tumour. Such is life. It is full of risk, some known, some unknown.
What we do know right now is that unvaccinated adults have a far greater risk of severe disease than unvaccinated.adults. If an insurance company were to offer a policy against 'hospitalisation as a result of SARS-COV-2)', premiums would be far cheaper for vaccinated people than unvaccinated. We have the statistics. It is clear.
Are there risks associated with vaccination. YES, there are. Are the risks associated with being unvaccinated more or less than the risks associated with vaccination? -You are at far greater risk of severe disease (including death) by not being vaccinated than the known risks of - for example, anaphylactic shock or blood coagulation (both of which are treatable with a great deal of success when identified early).
Are there possible unknown risks of vaccination, like the possibility of an unknown disease striking you down at any time. YES, of course there are, but being afraid of unknown risks is basically being afraid of
everything you can imagine, and everything you can't.
If you want to take the risk of dying in hospital with your lungs filling with fluid generated by an overactive immune system fighting a desperate rearguard action against a disease it has never seen before, you are free to do so. If enough people choose the same, there might not be space in hospital for you. We've seen it happening. It isn't pretty. Survivors are coming out with greatly reduced lung function, and the possibility of severe organ damage, including brain damage. Why would you want to increase the risk of that happening? You are free to do so, just like you are free to ride a motorcycle. Do you know what doctors call motorcyclists? Organ donors. Macabre humour to be sure, but at least if you die in a motorcycle crash bits of you can probably be reused.