Your connection would not allow streaming one Blu-ray quality video stream, and good luck doing anything else in the connection while that is happening.
If your work sent you a 10gb file and you needed to send it back, it would take you 3 hours to do that. (With a functionally useless connection otherwise while downloading and uploading the file)
Downloading a popular game like baldurs gate 3 would take just under 9 hours.
Downloading it twice (to play with your spouse or kids) + updates, and then watching Netflix (which will cut into your download speed) while you wait for it download would toil away a weekend.
Nevermind the fact that slow Internet literally wastes away your life as you spend more micro moments just staring at blank and partially loaded websites.