My reason for not getting one, very bad TOS
"By accepting this Agreement or using a Nintendo 3DS System or the Nintendo 3DS Service, you also grant to Nintendo a worldwide, royalty-free, irrevocable, perpetual, non-exclusive and fully sublicensable license to use, reproduce, modify, adapt, publish, translate, create derivative works from, distribute, perform and display your User Content in whole or in part and to incorporate your User Content in other works, in any form, media or technology now known or later developed, including for promotional or marketing purposes"
so they own your photos or videos you make.
We also may share such information and any User Content you create with third parties. We may share your PII, Non-PII, and Aggregate Information with third parties to complete your transactions and provide you with advertising and other promotional materials on your Nintendo 3DS System.(Nintendo 3DS System Privacy Policy)
So you bought it so you can get ads on it whoopie