You don't have to plug it in, it sounds lazy, but it's actually a task to plug my mini plug into my OG.
For me, I can have an induction pad by my computer and anytime I lay my phone down, it will be charging, instead of having to think about plugging it in every time I stop using it between calls/texting.
I do this a lot, I'll use my phone all day at my house, laying it by my computer on and off as I use it(I write for a website) and then I'll go out that night and my phone will be down to 10% battery because I didn't plug it in during the day. Now I won't have this problem because as I use my phone on and off all day while writing online, I'll just lay my phone on the induction pad between all calls/texts ect... and it will stay fully charged.
Sure I could just put a plugin-in cord by my computer and plug it in and unplug it between phone calls and texting, but that's a lot of plugging and unplugging, for a thing that is a devil to get in there.