Add me to the short list of people with a 3DS, I got one about ten days ago I think. I was going to buy an original DS since the Wii is starting to wind down, and also because I've been wanting to play some RPGs but there isn't much worthwhile in that category on the Wii but the DS seems swimming in them. But after watching E3 and seeing games like Luigi's Mansion 2, Super Mario 3D, Mario Kart 3DS, and Kid Icarus, I knew I wouldn't be able to resist buying a 3DS when those games hit. So I then started thinking, why should I buy a DS if I'm just going to get a 3DS at the end of the year? It is expensive, but I don't anticipate a price drop soon and so I'd end up spending more anyway if I got a DS first.
I could justify the cost since for me, the system is two handhelds in one. Otherwise, I wouldn't have bought one now, and I'm not sure when I would have if the price remains the same for a while. I've already bought a few DS games that I found on sale so you could say I got one to play DS games, which might seem a little strange. It may be a while before I get any actual 3DS games, since the current lineup doesn't particularly interest me, and the few that do aren't worth the $40 price tag to me.