Hmm... it depends on what games do you want to play. If you're a casual gamer, always on the run or bored with the ps3 games, then trading your ps3 for a 3DS XL is a good idea. If you just want to play a certain 3DS exclusive games, just rent a 3DS for a few days to play it.

For me, I have a xbox 360 and also haven't been playing it for months now because I'm always on the move, no time to sit in front of tv long hours so mostly game on mobile phone or psp. Still, when the weekend comes, I prefer to be able to relax and enjoy some actual quality console games which no handheld games is able to satisfy me. I mean, how else are you going to play upcoming console games like Dragon Age 3, Far Cry 4 or The Evil Within on a handheld? Of course if you have an awesome pc gaming rig, that's another story. Even though the focus may be shifting toward xbox one/ps4 but I have a whole lots of backlog games that I still haven't even begin yet so I'm definitely keeping the last gen console