i don't know how much of it has to do with age.
As for out of touch - I barely know any of the new, hot bands and have never heard of Rick and Morty either. I live 3 miles from work and don't even bother turning on the radio for the 8 minute drive, so I dont really get exposed to new music. I have only so much time for tv after "real life" - work, family, etc. I'm not watching tv at 1130pm when Rick and Morty are on. Sure, they're on Hulu, my son has an account, but I just don't have room in my schedule. I'll eventually check an episode out, but it's not a priority.
It takes work to stay hip, and sometimes it's not worth the return. I'd rather read a good book. Who cares about New Republic.