Re: Solder not Socket...
"your old MacBook will have an excellent resale value"
But will you want to sell it?
SSD controller wear-levelling obfuscates direct access, so only a full drive erase with random data will overwrite everything. How many typical Mac users will do that (requiring them to overwrite and re-install the OS) before selling on their computer?
Corporate IT recyclers will often physically destroy hard drives before selling on the computer, but when when the SSD chips are soldered to the mainboard this isn't possible. Hence computers with built in SSDs will have to be physically destroyed to protect user's data. Not so good for the environment.