But what do you use to insert tabs then? For me, giving up Caps Lock would be a lot more convenient than giving up Tab, because I almost never use Caps Lock, whereas I use Tab a lot.
I need to reliably enter/leave edit mode way more than I need to insert tabs, but I can still insert tabs when needed with Ctrl-q Tab
When do you need to insert tabs in vim?
Personally, I rarely need to insert raw tabs: the only exception may be Makefiles (and for that I have a configuration)