Well obviously that depends entirely on where you live and travel to. I've carried a chainsaw on trips for decades because without it i'd have been screwed on multiple occasions. Mine is used mostly for cutting trees off trails, which happens a lot in thick forests. I've also used it for firewood, making a bridge and even ground anchors for winching.

Electric wired chainsaws might be improving these days, but generally they are crap for anything more than 6in dia. They require massive amounts of power to do anything more than trimming and I could never see one being run off a 12v outlet unless you simply wanted it for cutting kindling.
Also, I've never had a fuel spill. I just tighten lids and make sure stuff can't move around.