Of course, 5 years is the support window of Debian and Ubuntu without Ubuntu Pro (with it it’s 10 years). Kubuntu LTS is only 3 years though, so just keep that in mind.
Debian is pretty great if you’re fine with older versions of system software. User-facing software can be just as up-to-date using Flatpaks. I wouldn’t recommend it for certain tasks like gaming though, as an up-to-date kernel and up-to-date DE is beneficial.
Of course, 5 years is the support window of Debian and Ubuntu without Ubuntu Pro (with it it’s 10 years). Kubuntu LTS is only 3 years though, so just keep that in mind.
Debian is pretty great if you’re fine with older versions of system software. User-facing software can be just as up-to-date using Flatpaks. I wouldn’t recommend it for certain tasks like gaming though, as an up-to-date kernel and up-to-date DE is beneficial.