I hope you dont think I was being sarcastic when I opined a handsaw would be a better fit for light duty real occassional use. I was 100% serious. Sometimes I chime in here when this anything you do has to be motorized mindset shows up. Like gee, 100 feet to the maibox, do I need the v8 diesel or the v10 gasser for this ardurous trek... < now that is snarky, but judging by what I see of my fellow humans when I go into town..comparing what generic folks look like to the 50s and 60s, very broadly speaking..I have that opinion there has developed this motorized or nothing mindset..just sayin...
I have when I was younger between 20 to 30 cord done with a 30 inch sandvik bow saw. Thats all I had and used to heat/cook and do sugaring with. I did have a small chainsaw but used that only for hired on work, cutting fence posts primarily, and I used a variety of provided chainsaws for helping with commercial firewood and a couple years I did town maintenance clean up..but all my own wood for any purpose I used the bowsaw. Any decent quality bowsaw or arborist trim saw will cut like a big dog and they are a perfectly viable alternative to a cheap gas saw or a corded electric for light duty use in the backyard.
Some brands and styles to look at, bahco, silky, sandvik, and along those lines. I would avoid those cheap handsaws you commonly see in box stores, theres little to no value to them. Most likely why people dont use them much, they suck, but they never see the better alternatives either, because chinamart, chinadepot and chinahardware dont have them on the shelf. Now I did get a quality smaller bowsaw at chinamart, a fiskars, but all they had was a 16 inch, I like 24 to 36 inch better for general duties.
A decent good hand saw WILL cut and it isnt all that slow or tedious or difficult. Modern bowsaws, well built ones, not the cheap crappy ones, are nothing like the old misery whip bucksaws or crosscutsof the olden days (and I have spent some time on those as well), they are fast effective and lightweight, and a good pro level one can cost less than the cheapest new gas or electric saw.