I'm wondering:
How many people use the throttle as a true variable device?
And how many just use it full on in extreme circumstances such as hill starts?
There's a battery lifespan reduction price to pay with regular and prolonged use of throttle (as
@matthewslack kindly pointed out) , which aside from legality and liability concerns after an accident, is one of the reasons why I disconnected mine - but it's a nightmare to remove completely, now that I have so much on the handlebar and Zefal Dooback II end bar mirrors (t'was a nightmare to insert those in the first place).
Leaving it there will come in handy if I ever need to connect it again to get home (simply remove the end caps and connect the cables), if a pedal falls off in the dark and if I have no tools or little opportunity to use them, which happened once.
I don't miss the throttle too much, because of how my BBS01B is set up in firmware (permanently 100% "Keep current" of 15A at level 9), but I do miss it on hill starts. I may go through the MVSA certification route as suggested by
@Wisper Bikes sometime in the future, as I live in a hilly area, and travel through hilly areas to other hilly areas.