[cube00]

That "pain and fatigue" is saving you from future bugs you'll inevitably pay for down the line.

Forcing you to be clear and explicit about types and handling cases where "undefined" could exist is a good thing.

It might take longer to develop but I've definitely seen I get fewer run time errors once it builds. No more staring at a blank page and checking the developer console for an undefined that's brought everything to a halt.