For me the appeal is self-sealing punctures. On Chicago roads, there’s lots of glass and potholes, so it’s worth it.
When the tires start leaking at rest, I take the bike to my LBS and have them freshen the sealant for about $20.
I’ve had a number of punctures, especially when the roads are wet. Only one has not sealed in the three years since going tubeless. That was fixed with a dart plug.