Just need to vent...

there's a 400' cedar post and rail on our property line owned by our neighbor. when I was young and healthy, I would replace the posts as they rotted at the soil line, and rarely a rotting rail.
now that I'm old and confused, I ignore it, and our neighbor hires handymen to do it.
each time one falls over, he tells them to replace it, and check all the others. invariably, within a few weeks, another falls over.

 

I still round up my gas purchases, but the higher the price goes, the more difficult it is to get it to stop where you want. ocd?

 

Yep -- far better for your vehicle, and unfortunately how most modern fuel tank emissions components are designed.

After about 2005 or so... multi-clicking after the first, you risk the chance of liquid fuel getting into the intake port for the purge charcoal canister. This is designed to take only vapours from the tank and absorb them into the charcoal, for use later when they can be burned for power, thus injector pulse trimmed to ideal for ICE efficiency.

If you fill the tank up into the neck past that port, and fuel gets in there... soaks the charcoal making the canister unsuitable for emissions control; poor fuel metering can result as the PCU expects a different richness at the O2 sensor than it gets. This of course lowers efficiency and kills power and idle quality, as the PCU tries desperately to push / trim back enough pulse to satisfy the O2 sensors. If done a year of fillups... can require replacement of the canister and purge valve mechanism. Mind you -- this can still happen if you don't fill past the port but close, and the car sloshes it around, same difference to the charcoal.

First click usually is safely away from splash-contamination of this vapour port (I mean, if you're fond of taking your car anywhere it'll tilt on the road surface >35 deg on the filler side... u be u, but all bets are off ). My childhood driveway was 58 ft and 30º dug into a hill, but was built during lap belts and ignition points still adjusted by the owner, let alone fuel tanks being little more than vented canteens, purging vapours right to atmo... ah, the '60s

Used to multi-click-fill all my cars with little downside since my first in the '80s (in fact, used to fill until I could see the fuel bubble up around the filler opening, challenging myself to get it juuuuust full enough it wouldn't spill out onto the paint)... but with the junky 7th-gen Honda, one of the forum keys to restoring mpg on those things, was to swap out the purge mechanism, as was known to be poorly-engineered from the factory (very sensitive to even slight overfilling). Taking it out, found it was full of fuel. >$200 in 2015, and mpg went from 31 to 36, plus far smoother at idle and torquier than I got it. So when the previous turbo Honda's mpg took a nosedive about 30K (41 down to 36), inspected the canister... and the thing was also filled with fuel. >$300 -- in 2019. Stopped multi-clicking after that

Try not to give a third of a studio rent payment ($500) to your OEM, if you drive a modern ICE car... just because you're spazzing about two cups extra fuel not being in the neck every fillup