Arrgh! Before reading (Are you new to home automation or Hubitat or coming from a different platform such as SmartThings, Vera, or Wink? This may help!) I assume all devices should be included with SO security. This site says never use SO security. Currently ALL of my devices have been included with security.
"Older devices that only can pair in S0 should most definitely be paired as no security. S0 is extremely chatty and can overwhelm a z-wave mesh. The rule of thumb overall is to pair all devices without any security EXCEPT for Locks and Garage related items. "
I am not sure what 'Older' means. Most of my devices, switches and plugs, have been purchased within the last two years.
Should I really exclude all of the devices then include them without security?