I have one of those. The standing joke (although I'm certainly not laughing) is that I'd come home from work in winter to find literally every single light in the house on! I'd spend the first five minutes going around turning off lights that were on in rooms that no-one had entered for hours. I get that the kids don't pay attention but it drives me mental that my wife just doesn't see this. It's the same with the dishwasher - she'll put it on at 10 o'clock in the evening in summer, when it's dark, rather then the next day when we may have several excess kilowatts being producing from the PV for several hours. Or she'll put it on 75% full right before we sit down to dinner!
I've managed to claw a bit back recently by changing the programming on our home automation system. Now, the utility room, bathrooms, and the kids' bedrooms are on timers. Since I'm the only one who can program it, there's nothing they can do about it!
Oh, and I've also installed an "all off upstairs" switch in a central downstairs position, and an "all off downstairs" switch in a central upstairs position. Very convenient way of turning off an entire floor's worth of lighting, and something worth considering if you'd doing home automation.