Ya, well that Fiskars is working on a pile of dry Doug Fir. Bring that mighty tool over to my place and I'll let you have at it with a chunk of Elm grown on the side of a swamp. You'll be slamming that little maul for six minutes on one piece.
I've heated with wood for over 30 yrs, and now, just heat my garage/shop with wood. I use a log splitter with an 18 hp Onan powering a 6" hydraulic cylinder with a 30" throw. Some of the nasty stuff that goes through this machine gets stuck on the stationary wedge or gets pushed off the beam with 10 lbs. of strings still attached. Towards the end of the heating season, there's always a few pieces that didn't get processed small enough to get through the door of the stove. These, I hand split with a splitting maul. I wait for a cold day because, as mentioned, wood splits better when at -15-> -20f.
I hope to see some more Ash run through in the coming years as the EAB takes hold. Estimates of Ash die off in MN are up around 3 million trees. Ash splits easily and makes a fairly good firewood.
For campfires, I use lumber. It is easy to transport and no worries about transporting any kind of pests or disease. If I don't have enough around here from my business endeavors, I visit a local residential building site, ask politely, and raid the dumpster.