I generally install them (or plan to install them) in areas where:
A) the switches are commonly used,
B) they are switches that generally get left on accidentally,
C) If I can’t decide between smart bulbs or switches, then the number of bulbs generally makes the decision for me
I have mine installed on the kitchen lights (switches 4 bulbs) and the driveway lights (switches 2 bulbs). I plan to get one for my bedroom lights (switches 4 bulbs) but I have not yet looked into Dimmer smart switches yet, and that’s what I’ll need.
Automation and general use. For my kitchen lights, (for now) I pretty much only use it to turn them on and off when I’m not home for the dogs when I’m getting home late. And the driveway lights are set on a timer. I also use it for security so I can make it look like someone is home by using a SmartApp that randomly turns the lights on and off.
My whole house is set up to use the same bulbs. I have some TCP LED bulbs. No issues, but I only have on/off switches, no dimmer switches. I have not yet had any issues during set up. Links right up no problems.
All of my gang boxes have had neutral wires, so I got lucky.
I have two Echo’s (one dot and one normal one), I use my Echo ALL the time to control the lights. When I go to bed I use it to turn off “Everything”, I also use it to control the SmartBulbs in the bedroom for setting the brightness in the room.
Just try one and if you like it, go all in. But to be honest, you may or may not need to. I mean, if you have the time and money, then by all means. haha. However, I personally only have a handful of switches in the entire house where I actually need them.
One nice thing about Smart Switches is if you can use SmartApps to link them together or link them to SmartBulbs. For example, for a while I had it set up so that when my Kichen Lights smart switch was turned on, it also turned on the living room lamp (smart bulbs) which was nice.