You didn't tip for X in 2003 or 2013 -- should you tip for X in 2023?

SWJJ said

transactional services = no tip
counter service (where they clean up a mess I leave) = 10% tip
to go at a full service restaurant = 15%
Full service restaurant = 20%

These are my baseline minimums, but I do go up depending on the level of service provided or my inebriation level.

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I assume plumbers, electricians, painters, service technicians, etc fall under "transactional services". There was 1 that got me when I went to pay for a new water heater, the total was $3300 and there was a tip line with 10% recommended. A $330 tip? I gave the 2 guys $20 each.

We also tip the lady that cuts our hair.