I despise push mowers, if I can't cut it with a tractor or a string trimmer, it doesn't get cut. However, push mowers are the right tool for a lot of situations.
For a small yard the battery powered mowers have some advantage. Quite, reduced maintenance, easy starting, no fuel storage.
If you're good with maintenance - A gasoline powered mower is probably still a good option. However, that means ethanol free gasoline during the season and no gasoline in it during the off season. Or maybe ethanol free gas and fuel stabilizer in the off-season. The occasional oil change/spark plug/air filter. The Honda engines are amazingly reliable & durable.
The flip side of that issue is there's very little maintenance needed for an electric mower. You charge it, turn on, turn it off, re-charge it. No gasoline to varnish up the fuel system, no oil changes, no plugs and filters. I can see the attraction for a LOT of suburban and urban dwellers. And the reduced noise will put you on the good neighbor list.
The batteries will eventually die and they're not cheap to replace but, if you're not into a lot of maintenance (and a lot of people are not) you may still be ahead of the curve in terms of money spent.
My take on this is you pick the tool that works for you.