CoH remains the only MMO in which I could often log in and play all night without talking to another player or killing a single thing, and still not be bored.
Oh yeah, there were a ton of things you could do and not get bored. I often killed an hour or two at a time just ninja running all over the place. Especially on a character with weapons. (
Especially especially Vanguard katanas. Glowy swords ftw!) That running animation... with the flippy-jumps and the whooshy-noises... holding your weapon out behind you and just racing down the street. That was so
freaking cool.
Or super jumping around... pretty much anywhere, really. Same with flying. Checking out the scenery or hunting down explore badges. Heck I would just do laps around my SG base over and over again, stopping here and there to admire things I had made. I was no master designer but I was getting better. I certainly enjoyed practicing it. Like I saw someone's pic where they had set the beacon screens into the front pillars of the tp pads, and once I figured out how to do that I just kept coming back to stare at it. Never got old.
And the outfits! I think I spent more nights in the tailor than anywhere else. It was just so amazing, the variety of looks you could make with that costume creator. I spent so much time refining outfits that I actually made it into Hero Dawn's hall of fame for most improved costumes

(My first ones were... well I'd say "abysmal" but it's too nice a word.) Course that was the last cc they held, so the results never got officially posted on their site. But it totally happened! I swear it did! I wouldn't just make up something like that! >.> *whistles innocently*
Shoot, this one Halloween, just for giggles, I kicked a leftover pumpkin from an Eochai spawn from the west side of Atlas clear across to Ms Liberty. At first I was just having fun kicking some junk around. I do odd things like that; I'm an odd guy. But then I gave myself a challenge to park it at Libby's feet. I did it too! It was beautiful. (I felt like I should've gotten a badge for it... "Time Well Wasted" would be a fitting name, hehe.) Getting it up the stairs was the hardest part. That and taking my time... if I kicked it too hard it would go flying and despawn, and then I'd have to start over. And I mean, forget that. That nonsense was way too silly to do
twice.

But yeah, awesome and interesting and cool and fun stuff was all over the place. You didn't have to look very far to find a way to spend a few hours out of combat. It was glorious.