I said I hated dealing with them, not that I hate them. That wasn't really difficult to understand.
Neither I nor anyone else said anything about you hating them. Your strawman is your own - don't pass it off as mine.
I don't like touching, exchanging money or interacting with scruffy, ugly, smelly people with poor personal hygiene. This is usually the case with people who have scruffy homeless beards. On the other hand if they're youngish and trying to grow a scraggly trouser beard, it's just unsightly.
Now you're adding "smelly" and "poor personal hygeine", which is a different issue.
You put "ugly" in the same list, apparently seriously. You claim you feel hatred (an extreme emotion) if the person swiping your goods at a till doesn't meet whatever standards of beauty you decide are appropriate. Try to take a step back and look at that rationally. Does that really sound reasonable to you?
Obviously the majority agree as its policy.
I have two answers to that:
1) Your reasoning is obviously wrong because the dress code policy of a business is not decided by national voting. It is not decided by the majority of the population. It's decided by the handful of people who run the company.
2) Even if the majority do want it, that doesn't mean it's rational or fair. There are numerous examples of irrational prejudices being very widespread, e.g. apartheid in South Africa or segregation in the USA.
People interacting with the public should have good hygiene and look smart. The same reason you don't see waiters and waitresses in restaurants with facial piercings and beards. It puts people off!
We're talking about cashiers in a mass market shop. It doesn't matter what they look like. It's not a fine restaurant, stately home or high-end hotel. All that matters is that customers can easily see that they are staff and that they meet appropriate safety and hygeine standards.
Again. I'm sure they're nice people on the inside, I just don't like ugly people with scruffy beards. Shoot me!
That would be relevant if you were inviting people around for one of your dinner parties. It's not relevant to someone who briefly serves you in a bottom-end job where you don't even have to look at them.