Same here. That game was amazing. It (deservedly) won awards for the writing.
When CoH shut down, it was the only MMO I played so I decided to branch out. Since then, I've played Everquest 2, Red Dead Online, Black Desert Online, Divinity: Original Sin, Sea of Thieves and Elder Scrolls Online. I also play a bunch of shooter games: Borderlands 2 and 3, The Division 1 and 2, Far Cry 3 and 6, Ghost Recon: Wildlands. I've played building/survival games for a long time - Minecraft, Starbound, Valheim, The Forest, 7 Days To Die, No Man's Sky. And, finally, I play a bunch of 4X games: Sid Meier's Civilization 4, 5 and 6, Stellaris.
So, yeah. Once upon a time, City of Heroes was my only online game. Now, my Steam library has 67 games and I have a few more under the Epic and Ubisoft launchers plus a few with their own launchers.