Congrats, you have just invented caching, but worse
SSDs have limited write endurance, so moving a lot of large files on and off of them will wear the nand flash out shortening its lifetime and potentially killing it
If yoh DO want to run off of a HDD, it is a good idea, but for older games that were designed to run on them, modern games are more reliant on fast drives
Edit:
assuming 150MB/s HDD read speed (fairly fast for a hdd) it would take 11 minutes to move a single 100GB file. This speed would be vastly lowered if copying many small files
My guess would be that after we get scared the brain goes "good job, you survived, here's some endorphins". That way we enjoy getting scared because happiness follows
What is this picture of?