On a tangent, I also replaced all of my light switches with Lutron Caseta smart switches. They are not cheap - $60 per switch, no joke:
https://www.amazon.com/Lutron-P-PKG1W-WH-Wireless-600-watt-Multi-Location/dp/B00JJY0S4G
But they have several benefits:
1. Each switch has an on, off, dim up, and dim down button.
2. Each switch includes a compact remote control (uses a watch battery, but has a 10-year battery life, plus uses RF so interference isn't a problem & you don't have to aim it). Lots of features on those:
a. The Pico remote has all of the same buttons as the switch does, plus a "favorite" button (like if you like to watch TV with the lights at 75% brightness).
b. There is a desktop pedestal available for either single remotes or multiple remotes, so if you want one next to your couch on an arm table, no problem.
c. There is a dummy wallmount, which is super convenient for adding switches wirelessly. In my bedroom, I only have one switch, which is by the door. I added a wall-mounted Pico remote on either side of the bed for convenient access. Looks & acts just like a wired switch. I believe you can add up to 10 remotes per dimmer. No wiring required, no electrician required. I have lightswitches at every room entrance now & at convenient places, like next to the couches & beds, it's awesome!
d. One remote can control multiple dimmers. Like if you have can lights & wall sconces, you can have a single remote control both. Or have an "all off" remote to turn off every light in your house when you go to bed.
3. The integrated radio is called ClearConnect & talks to home automation equipment. You can buy a smarthome hub (around $100) like the Wink Hub or the Lutron Hub & use your smartphone to control the lights (or if you get the Lutron Hub, you can use a Logitech Harmony smart remote!). Really convenient if you left a light on in the basement & don't want to walk downstairs to turn it off. You can also schedule lights (like by time of day, so your porch light can turn on at night & off in the morning), do vacation mode (schedule the lights to make it look like someone is home, even when you're away), and setup triggers to turn lights on (like via a motion sensor), plus turn on all of the house lights before you get home from work from your smartphone, among other things.
I hate the price & also hate that they are not flip switches (not a fan of flat-button switches, for ergonomics & usability), but they
are super convenient, especially when paired with LED bulbs. My power bill has dropped & my convenience level has gone up. btw, there's a nice LED cost-savings calculator available here:
https://www.ledwaves.com/pages/led-calc