Because the immunity from previous infection does not last. The last study I saw was 180 days of antibodies. Then you’re at risk just like the non-vaxed. Also private business can ask for anything. If you don’t like it then that’s fine. My private college demanded our vaccination record because they didn’t want me being measles mumps or rubella on campus. Sent from my iPhone using Tapatalk
Here’s how I look at it:
In 2017-2018 the United States experienced it’s most intense spike in Flu related deaths.
Covid killed over 300,000 people in 2020.
You can deny the vaccine, but you can’t deny dead people. Asking for a proof of vaccination or a negative test result isn’t a violation of anyone’s rights. I wish every park, concert, sporting event would require this.