if you buy DS would you still keep it if the 3DS dose not work

it will suck

I don't understand, sorry.

What are you talking about?!

If you buy any product and it's damaged or malfunctioning, you can go back and get it replaced.

What is this I don't even

I still own a DS for collection purposes and trading from older versions of pokemon towards pokemon white. Still I don't understand the it will suck part.