Of course there are still people in remote areas, poorer Countries, low-signal zones, etc, who actually do have to deal with this daily. I remember reading a while back how Youtube and Facebook were completely unusable for some users because of this - not because of the actual content they are delivering.
When downloading files, there was a lot of waiting involved, but if you were dealing with email without attachments, usenet, IRC, and some of the older chat platforms like ICQ, AIM, MSN messenger, yahoo messenger, etc. the lack of speed wasn't really noticable.
These days, most websites and online platforms like Slack won't work at dial-up speeds.
This episode of computer chronicles may remind you of the joy and horror of that time period. Note that most of these people are actually on corporate networks not dialing in... and its still horrendously slow.
Seconded that no one enjoyed it. We all looked enviously at the people at companies and universities with their better hookups.
Unclear if you mean 5 kiloByte or 5 kilobit.
I'm assuming you must have meant kilobit since 5 kB was a pretty respectable download speed back in dialup days.
It absolutely baffles me how bloated and inefficient our modern computing infrastructure is.