Well some of us have had the disease. In other words natural immunity, which from the research looks like it works. This should not be surprising given that's what the immune system has evolved to do. Some of us also have had family members with long term side effects from the vaccine (yes this happens, yes it's relatively rare, no they still don't know why yet). So you're saying my family shouldn't be allowed to enjoy the same rights and privileges as you because we risk being crippled by the vaccine even though research shows we already have immunity?
One way or another that remaining 15-20% will acquire immunity whether it's the easy way (for most) from vaccination or the hard way by getting the disease (riskier, but still hardly a death sentence for most).
The disease is not going away especially considering that Delta infects even the vaccinated (although people with immunity have very little risk if they do get infected). Denying anyone the right to make medical decisions for themselves or their family so that you can feel a tiny bit more comfortable I find to be simply disgusting. Now if that choice a wise or not is another matter, but the risk is primarily theirs.
We have many freedoms in this country, one of them is not to be at zero risk. Risk is part of life, if you feel safer staying home and living in bubble that's by all means your choice, but you do not have the right to force that choice on anyone else.