As do I

I find a lot advantages to Lipo cells. On a regular work day I bring both ERM+'s with Supremes on them, I can go thru 3 tanks in a day. Running dual coils in Supremes all day long wouldn't be posable with 18650's or at least you would have to bring a half dozen of them

At night the ERM+'s are about half charged each & I can charge them up in a couple hours. it would take for ever to charge all those half dozen 18650's

Even with single coil builds, if I compare a DNA75 to a DNA200 one with an 18650 & 1 with a fullymax, the fullymax last way longer & charges in half the time.
The swap & go of the 18650's is nice! but there are so many other disadvantages to the 18650