Seriously, have you tried to take a pet everywhere? I"ve tried that. I've had to sneak it onto the bus, and oh, don't forget the water and the food, and then it gets tired and you can't put it back in the bag because it'll stratch the living heck out of you when you do, and it gets bored and tired, oh and what about where it poos?
So yeah, it's definately a change to have a pet on a keychain that you can take everywhere without worrying about mess and other exteraneous stuff. I even have a lanyard that used to hold a picture ID from where I worked at previously and I use that to carry with. It just hides under my shirt when I want to be conspicuous. ANd being 24, yeah, sometimes you want to be conspicuous. ALthough most of the time people don't care.