Just a thought

Caps for ball point pens seem really unnecessary. Mine live pretty perpetually on the unscrewy end, not the inky end, and the pens never go dry or anything. I suppose the purpose is mainly for not writing on things you don't intend to, but, has anybody had a ball point pen dry out in recent memory? Just curious. When I get really, really, really busy at work, my mind wanders to innane things like this to ballance the tide.