I don't let concerns about battery life control the use of my devices.
However, when driving for more than a few minutes, it's charging in the car.
Having BT enabled car makes calling easy & now Siri enables with a push of a buttoning my steering wheel.
Also when I'm home & next to my charger, if it's convenient, my iPhone & iPad after charging.
Good Luck
It's not good to leave them plugged in all the time. It doesn't hurt to leave it plugged in overnight, but it needs to be removed asap.
Power is to your iPhone battery as sweets are to a human: It has the potential of inflicting too much of a good thing. Keeping your iPhone plugged into power can shorten its battery?s life span, or the amount of time before you must replace it. You actually strengthen your lithium-ion battery and prevent its premature demise each time you make it power your iPhone on its own, without the crutch of a power source. As Apple puts it, ?It?s important to keep the electrons in it moving occasionally.? So, if you keep your iPhone plugged in in an attempt to save a charge cycle, you'll actually defeat your purpose. The best way to conserve charge cycles is to use the device less. If you average 8 hours per day usage, cut it back to 7? hours per day.
I didn't see them asking to conserve cycles. But saying use your phone 30 minutes less a day is like reading an iMore article about battery saving tips. It's like disable features and don't use your phone to its potential.
It's just a suggestion. The point is not to leave it on the charger 24/7. And, no, conserving cycles wasn't mentioned. But why else ask about that?
Maybe they are like some of my coworkers. They always leave their phone on the charger at work. Why they do I don't know. Some people are just more comfortable have their phone always topped off.