I'm kind of drifting the thread a bit (perhaps not a bad idea about now), but if you have the ability to go with an electric mower, the sooner the better. Sell the gas one to someone who really needs that sort of equipment - neither kind is best for every situation - and move up.
I had a wonderful 3.5hp B&S-powered gas mower for over 20 years, and milked it along until one day it "plum wore out" according to the repair shop. I replaced it with a Bolens 19" electric model. Steel construction, made in America, one moving part (not counting the wheels). Yes, narrower by a few inches, but it really didn't make much of any difference in how long it takes to mow the lawn. In fact, it's probably faster because I don't have to deal with gas and other maintenance tasks, and my pull-starter arm is thankful as well. I got a corded model in order to not have to deal with batteries (bad experiences with "range anxiety" and battery failure with my cordless drills); probably unfounded in hindsight. I think the corded ones were also the larger / more powerful ones. Maintenance and on-going costs and headaches have literally been zero for over 11 years now, mowing about once a week during the summer (less this year due to the drought). I take it out, plug it in, mow, dump the grass on the compost heap, and put it away. Done.
Making this somewhat relevant to the thread, I'm the only one in the family who has lawn duty, but it was a decision that both my wife and I made to switch mower types. I know she hated the gas mower, especially seeing me struggle with it more and more over the years, and having to deal with gas, oil, and other maintenance, but the idea of going electric 11 years ago was different and not without perceived risk too. We decided to take the chance, and am glad we did.
Perceptions are an odd thing, but they are real. Side story, she had no fear of using our electric hedge trimmer. I'm terrified I'll chew through the cord, so use the old fashioned hand clippers whenever possible. But I have no worries about the cord with the mower. I long ago stopped trying to get her to use the clippers, and she happily kept using the trimmer.