Just do it. Quick and easy, and not that complex. Even if you only have a couple of light bulbs, now you can schedule them, automate them, integrate them with any voice assistant you may use
You may find you already have a lot more than just a pair of lightbulbs. Mine sees my router and stats, printer status, TV, speakers, thermostats, my phone, among things I got before HA
For me, I crossed the threshold when I decided to treat it as an appliance (Raspberry Pi 4) rather than one more thing that depended on me setting up a lab. I still haven’t made progress in the lab, but HA just works