Adium is by no means perfect, especially since it is still considered a beta release, but it does a lot of things better than AIM and iChat. I love the interface customization, it allows me to make my instant messenger client what I want it to be, rather than what someone thinks I want it to be. I'm all for a simplistic and minimalist UI, so that's what I go for. I'm excited to see where Adium goes next, it gets noticeably better with each release.
Come waste your time with me