That "worth it" factor is solely up to you - are these things you'd like to listen to? If so, yes, worth it. If not, then you're tossing money to the wind.
Do a search in the database for identified DMR frequencies or systems in your county. If you're interested in monitoring any of these folks then yes, the upgrade is definitely worth it. I'm sure there's unidentified stuff out there as well. Part of the fun of spinning your radio's dial is finding and ID'ing the unknowns. Best wishes!