And how often does a fridge door open on its own? Most people don't need other people (or things) to remind them that they should tie their shoes before getting out. If you don't need that, I assume you know you should close the fridge door.
I prefer the sound of air alarm now.
Yes, but how often do you experience power outages … I think in the last
15 years it only happened to me once.
or other things that lead to weird temperature changes?
I've seen some grumblings that the switch (in the US) to R600 is killing durability, but I'm not sure I buy that. If you dig through some of the service literature out there you'll see that companies across the board are also cheapening the sealed systems (e.g. aluminum replacing copper).
you know you should close the fridge door.
I to had a LG refrigerator declared "unfixable" and bought back by LG, but I actually decided they were idiots and fixed it myself after having not only their local repair people fail to fix it, but the "expert" from LG's regional center come out and diagnose it. (It should be noted that he diagnosed the condenser, the only part not already replaced at that point, and that failed to fix it so, they declared it unfixable).
Turns out in my case, the leak was in the yoder loop, a modern trick for increasing the efficiency of a refrigerator by running a high pressure refrigerant line around the doors to avoid needing electric defrost loops (what pretty much every fridge made pre ~2005 or so has).
And since the yoder loop is embedded in the spray foam insulation between the exterior and interior of the fridge is is largely unrepairable because the insulation would have to be destroyed and somehow partially refilled, which wouldn't be possible without adding a bunch of access holes/etc to the exterior.
So, I bypassed it, as a "research project" before buying another fridge, something the LG folks told me wouldn't work, and the tech refused to do. Which funny enough i'm an EPA certified small appliance repair tech (don't ask! lol) so, it apparently is just up my alley. And guess what 5 years later is still going. I've had to manually defrost the ice maker fan once in that timeframe and it does tend to get some condensation build up on the bottom of the french doors, but nothing that wipeing it away every few days doens't solve.
As an additional bit of fun, this refrigerator has a steel condenser and both aluminum as well as copper tubing/fittings.
One of many problems with LG is that they seem to have a rotating cast of metrics driven clowns running LG America. Junking a fridge is almost certainly more cost effective than spending the time to fix it, train their techs in depth, and get their logistics in order. The tech that came out had previously worked for GE and had worse things to say about their brand of chaos.
Funny enough the Whirlpool that replaced it did have exposed insulation (and gobs of epoxy everywhere). It would've been worse than the LG, except it actually kept things cool.
When I'm talking about the heater on mine not working, I'm talking about the heater for the evaporator. Without a working heater I'd get enough ice built up on the evaporator within a week to cause problems with the evaporator fan. If the fan doesn't work you're not gonna get much in the way of cool air into the fridge or freezer compartments.
We had a freezer door pop open overnight once... it was because one of the drawers wasn't quite shut properly, all was good for hours after closing it and then suddenly it popped open when we were in bed and we came down to the food at the front of the drawers defrosted.
When you use something day in day out for 40+ years you occasionally have an accidental bad interaction. Sometimes you press the wrong button on the TV remote, sometimes one of the drawers in the freezer is further forward by half an inch on one side and you didn't notice, it happens.
Most people, especially on HN, don't need to be reminded to think critically about how real world interactions actually might occur before posting poorly thought out responses for the sake of evangelically pushing a point, but here we are
I'm saying it can be useful, but only very rarely.
If dealing with an ugly path means streaming data all the time to the Internet and potentially decreasing the reliability of the whole thing, just because once every 5 or 10 years stuff defrosts...
No, it's for when the kids leave the door open or just don't close it properly - which is VERY frequent. The door alarm goes off once per week here, at least.