The better question would be who the hell would waste $100 dollars on something that is obsolete, that CFW can handle everything that the flash cart can do. The other person could spend those $ 100 dollars on something else instead.
I know, right. That's why I didn't keep the SKY3DS+.
Funny story : by the time it was delivered (bought from China, so about a month), I had learnt how to install CFW so I contacted the seller to return it.
I also tried to sell it locally ( the seller gave me 7 days to return it), but literally a couple of hours after I returned the cart, a buyer contacted for it on ebay.... The person asked me about another seller for a SKY3DS+, so I gave him my seller in China directly, but I added that he should look into installing CFW.
I wouldn't criticize people who choose not to install CFW, maybe just give them information.