Hehe, I have three! My 20 year old Kenmore (which still works great but weighs a ton and is a very basic, no bells or whistles machine), a lightweight Brother CS6000i (which has lots of nice features and weighs nothing...which is actually a problem) and my "baby", a Janome 6600. I really don't NEED another machine, not at all. I have backups for my backups. I just WANT one, because they're ...well, they're just neat!
I almost would prefer to find one that is really pretty but doesn't work...that way I won't feel guilty for just setting it up on a shelf somewhere as eye candy. I have a "thing" for old tools and old machines...I think a lovely old sewing machine would look great in my living room, right next to my old hand drills, oil cans and wrenches. LOL