Comment by kbolino

There are multiple reasons why FTP by itself became obsolete. Some of them I can think of off the top of my head:

1) Passive mode. What is it and why do I need it? Well, you see, back in the old days, .... It took way too long for this critical "option" to become well supported and used by default.

2) Text mode. No, I don't want you to corrupt some of my files based on half-baked heuristics about what is and isn't a text file, and it doesn't make any sense to rewrite line endings anymore anyway.

3) Transport security. FTPS should have become the standard decades ago, but it still isn't to this day. If you want to actually transfer files using an FTP-like interface today, you use SFTP, which is a totally different protocol built on SSH.