Tipping is generally for a personal service. My bus driver is not serving me personally- pretty dumb argument
Even if he lowered the floor at the entrance for you? Helped you get a pram on or off? Advised you on which stop is closest for where you're going?
Your binmen ARE serving you personally, though - they come to the edge of YOUR house, empty YOUR bin for YOU and then bring it back from the lorry.
As a PP said, there can't be many more personal services than those provided by a carer. Also, nursery workers may have to change your children's nappies and deal with 'accidents' - how is that less personal than bringing food and taking your empty plates away?
I'm not saying that waiters and waitresses aren't providing a valuable service, I just don't understand why they, along with hairdressers and taxi drivers, should get tips and other people who serve you in different ways and aren't on high salaries shouldn't.
It's very entitled to think that you should by rights be given more money for bringing food from a kitchen to a table when you wouldn't dream of giving more money to somebody at Screwfix for bringing the goods you've ordered from several drawers or shelves to the counter. What's the difference?