I have one backpack I use for everything. I usually keep a 65W USB A+C charger and a 45W Powerbank with a small assortment of cables in there.
Now of course I have multiple USB-PD chargers and powerbanks, however all of those mysteriously disappear when I need them, making it necessary to use the backpack ones at home and being the clumsy dork I am, I always forget them there reducing the backpack charger count to zero. And guess when I come into a situation where I desperately need to recharge \ on the go?
Yep. This is how I roll. I always take a specific bag on trips. That bag has a specific pocket that has 2 spare cords (short and long), 1-2 spare wall chargers and a power bank. All my cars have cigarette lighters with power-delivery chargers and a cable that never leaves.
The only time my phone dies is when I'm out all day, using my phone way more than I'd thought and I'm with people who still use old iPhones so their whole life revolves around lightning still.
It’s probably a matter of needing the charger until the last second. Then you’re shortly distracted for whatever reason, take your phone to another room and your fate is sealed.
Though I’ve never left my charger at home, either.
As someone who travels a lot for a living, I have two chargers in my travel pack. Always. When I come home it stays there until I'm out and about again.
Other things that always stay in my carry-on kit:
Phone stand
Two pairs of socks
A t-shirt
A network cable
A bunch of USB sticks
20000mAh battery bank
plastic fork (for eating cup noodles. I used to carry a metal one, but airport security somewhere didn't like it)
It's really too bad chargers aren't sold anywhere. Tiny bodegas, gas stations, grocery stores, clothing stores, office stores, your mom, pretty much any store that's open right now...
Edit on a serious note:
Actually, now that I think of it, it's a little ridiculous how they're literally everywhere. I've even seen them in a restaurant before. That's one hell of a huge pile of plastic.
My boyfriend's girlfriend (not me) is like that. She's also got major dietary restrictions and always ends up bringing 3x more food than she needs. Food anxiety sucks. I'm thankful I have no firm dietary restrictions, just things that don't agree with me.