Why do we still use hard drives and SSDs for computers, when SD cards can hold like a TB of data in a tiny package?

Question

I’m kinda curious as to why everything hasn’t just shifted over to these tiny, affordable little guys. They can have so much on them!

In: Technology

Answer 1

Because SD cards have comparably terrible read and write performance. 

So, it will work, it will just be very slow and awful compared to an SSD.