Hmmf.
I hadn't changed it previously because I thought it being more secure was important than a matter of convenience.
On one hand you have the users who won't have to check a box and will remain logged in until they clear their cookies or logout. Had that box been cleared they would only have the inconvenience of having to check a box once.
On the other hand, you have the users that want to use a shared machine or don't want to remain logged on, they will then have to check that box everytime. Should they miss that checkbox they could well compromise their account and perhaps even lose access to it.
So on one hand you could be saving one step once for some people, but adding a step everytime for others... thats why I hadn't changed it - but I won't undo what one of my admins has already done.