Yes and yes

Yes, 4 easily accessible in various locations in the house and 1 in the garage. I check them all when I change out the batteries on my smoke alarms, which I do all at once when one starts to chirp.

Not really, my family looked at me like i was mad when i suggested it. Got an out of date powder extinguisher from Volvo tho. Seems to be intact

I have one and pressure is OK (at least if the gauge isn't stuck). Is there anything else that you can check yourself instead of having it professionally inspected once a year? Does anyone know what they inspect?

Yes and yes, bought it for PCB rework but in general we should all have them.

One for every room I intent for humans to survive in, plus one in each car. Also recently upgraded to hardwired CO/smoke detectors and each bedroom also has a combination alarm that uses Z-Wave to alert me anywhere, just as a backup. Also, we practice fire and earthquake drills monthly, along with a couple of other scenarios that are more rare/less dangerous.

One in the kitchen. One in living room next to the fireplace.

I have 2. One in the kitchen and one in the garage. It's a cheap insurance

Not directly in my home, but there‘s one in the stairway

I have a few in the house and one in the car. I just updated the batteries in all my smoke and carbon monoxide alarms too.

Yes I fire extinquisher in my home all the time

Yeah, three. One in the kitchen, one at the bottom of my basement stairs, and one in my laundry room.

I have five! And I just checked them as part of my semi yearly maintenance.

Kitchen under stove, laundry room by dryer (wife and kids refuse to empty lint trap, smdh), one each by both furnaces (different parts of the basement), and one in the garage.

Never had to use one, hope to never have to.

I do and I get it checked and retagged every year.

Yes; yes.

Yes, and yes, that's what maintainence is for.

no, because my family insists it's not worth it.

Yes, one in the basement and one in the kitchen