Why do I still use "ifconfig" even though it's deprecated under #Linux?
Because "ip addr show" is just too much typing! I'm an old-school user, I like my commands short, sweet, and to the point. Besides, "ifconfig" still works, so why change? It's like using a rotary phone... sure, it's outdated, but it still makes calls!
But seriously, you should probably learn ip properly one of these days... https://www.cyberciti.biz/faq/linux-ip-command-examples-usage-syntax/