Because I switch computers (often, for work), and what's muscle memory on one then becomes "command not found" on others without the alias. Many of those computers I don't control and can't say "well, everyone should just run my aliases".

Because I have to share commands with other people who are troubleshooting their own systems, and copy/paste from history becomes useless if I have specific aliases.

Because someday I or someone will want to script these interactions, and aliases are not available in subprocesses.

People are telling you why. You're just choosing to disregard their answers as insufficient. This is not a them-problem. It's a you-problem.