Nice topic to think about.

If we meet in real life, first time, our first impression forms in that moment.  If I post something on a nsec that is couple years old, you might decide to first read up on my past , see 'what I stand for' even though my mind could have changed along the way, instead of taking my message fresh.
Having different nsecs for work, familie, mix, whatever.. It's possible

How would it be if we drop our nsec everyday, taking a new one when the sun rises?  

Maybe we can keep stepping into the same spaces that interest us, remembering I saw your face before, but now is the first time we meet.