What's your stance, and why?
The only argument I see for this is because they don't get paid much but, without sounding cold, that really isn't my problem. I don't want to spend 20% charity on essentially a randomer for doing the job they're paid to do.
You also don't exactly slide some extra money to cashiers or any other service workers for doing their job, either, but wy is it expected for the above two industries?
It might be more of an American thing, tbf.