I do have dimmer switches for the living areas,as I am not overly fond of brightly lit rooms unless I am doing some craft or other!! I find that lamps get me out trouble for these situations,anyway,so the dimmers on the main lights are perfect for me.
We have a dimmer in our dining room but that's it. I never use the dimming feature though, because it makes a buzzing noise when it's dimmed, which gets on my nerves. My grandparents have a dimmer in their dining room as well, and it does the same thing.
one dimmer switch on my daughters old bedroom she wanted one when a teenager . now find it useful for my grandchildren when they stay over, one of them likes the light on when she goes to bed and is quite happy with the light turned down low, when she is asleep I just turn it off.
We have all LED's now, except the light over my bed, which is nothing! I just use the bedside light, in my bedroom. My husband tried to replace the light, but he couldn't, as he'd have to stand on the bed to do it, & I didn't think he should, as he's not an electrician. It's not about just changing a light bulb, there's different coloured wires sticking out of the socket. Oops, I've got off the topic...again!
We have dimmers on many lights in our home. I am happy with them. We have updated most commonly used lights to LEDs because they are more energy efficient , but unfortunately they can't be dimmed. We try to use a warm/ white coloured bulb as opposed to the brilliant blue/white, so it softens their effect a little.