I need to recharge my own wetware at least once a day. So there is a nearly guaranteed several hour idle period where I'm not using any technology and where laptops and phones can be recharging too.
I don't see much end user value in not taking advantage of that.
It's like if you parked your car literally at a gas station every night anyway. Would you really care about a fuel tank that could let you drive for more than 24 hours?
But my worry is that with more and more efficiency in computing and battery tech, if Apple instead decides to reduce the battery capacity? Especially with no competition in sight, or competitors trying to follow Apple, we may end up with smaller batteries instead of more battery life. They seems to be doing that with iPhone. Also 18 hour battery life can quickly degrade to few hours if some processes are spinning the CPU continuously which can happen knowingly or unknowingly with several apps open (Docker occasionally does that to my MBP).
With several days battery life, I can even go for short travels without even bothering about how to charge it.
Now I have an Apple Watch that lasts almost but not quite 2 days, I charge it every night and it has never gone flat on me and I find it no hassle since I take it off before bed anyway so I just drop it on the charger.
Personally I would like a larger battery because that means i can leave my charger at home, or even use a weaker USB-C PD on the go just to reduce the drain rate.
The problem with the fuel tank analogy is that liquid gasoline is really heavy and your energy efficiency would drop dramatically, due to lugging around an extra 80 gallons of gasoline. That's not necessarily the case with a larger battery. You still have to carry the additional battery material, but the marginal costs IMO are nowhere near as high.
It’s actually revolutionary for how I use a computing product. If i had to charge them everyday I assume they’d be dead 1/2 the time because it’s annoying to have yet another thing to plug in.