I don't and it doesn't really bother me, my family always knocks before entering if my door is ever closed (which it usually isn't tbh)

The bathroom and shower doesn't have a lock on the door tho and i'm in constant fear of someone walking in

yup, but since it's always locked when I'm... u know... so everybody knows what I'm doing when it's locked... so there is no use... they know either way, it's just theu haven't seen me...

Bedroom: no
Living room, toilet and bathroom: yes

In my room no, in the bathroom yes

Both the front and back door have a lock. I live alone, so I don't require a lock on the bathroom or bedroom doors.

I live in a dorm atm, so yes.

Bedroom? No. Bathroom? Yes.

yes but i never lock the door in case like a killer or fire

Yes. I get paranoid when it's open, and I have a bad habit of checking 2-3 times to make sure that I've locked it.

My bedroom doesn't but my parents always knock!

i do have one on my bedroom but i never use it. my door is always open except for at night when i'm sleeping

I live alone, so yes my front door locks, and then I have the security doors that you need a security tag to swipe to get through to the elevator.

Yes, I have a lock on my room. I never really use it. No one comes in if my door is shut.

Yes. I'm scared that a killer might enter. In case of fire, there's a secret door leading to another room so people can wake me up through that.

Yeah.

My room at home is the attic so I don't even have a door

Bedroom, yes
Bathroom, no

Bedroom: No
Bathroom: of course...

Same! Same with windows I always check them.

i can't believe having bathrooms without a lock is a thing