Accepted advice to map ; to : in normal mode

I've been seeing people say this online and they are right. The default
behavior of ; is not very useful and not something I would remember to
do anyway (I am almost certain I would type ftft instead of ft; for
example). Not having to hold down shift when going from normal to
command mode, which I do all the time, is a great boon. I am starting to
think I should question Vim's keybindings more often.