Kinda yes and no.
I don't collect DVDs at the moment. DVDs that are not watchable by at least 2 people seem kinda out of place in my house since movie watching is rarely done alone. As of now I am the only person who watches anime. My brother would....but I'm gonna wait until he's a tad older before I'll let him watch with me. Scintilla is a DVD purchaser and when I watch anime, I usually watch his DVDs with him. I don't watch anime every night but I do think about it a lot....mostly when I listen to music trying to make new crazy schemes for music videos.
I do own manga. But I don't have a whole library. Just a few volumes of Love Hina and Neon Genesis Evangelion.
I really have no more interest in Japan then I did before I watched anime. I'm only into it simply because it's animated
I have been to conventions, I have made AMVs and I have sent an AMV to two cons (soon to be three hopefully). I've never costumed though I would like to. It's not the "I want to be my favorite character!" feeling. I just haven't worn a costume of any kind for so long. Not even for halloween. I'd dress up to satisfy my inner child because a con can be like a giant costume party at times. But I won't walk around in character or enter any cosplay contests or anything like that.
I have a few "all-out" symptoms....but I think I'm somewhat sensible within my fandom (meaning I don't have rabies). Otherwise, I know I'm a nut-job.
But I'm probably a more rabid Disney fan then I ever will be for anime. Especially the older Disney stuff.