Arrowhead, that is not the point! It is really not that difficult to understand what we are complaining about. Really!
IF a VFR pilot is actually really lost, NO ONE would hold it against him/her calling 121.5 saying: guys, help, I am lost.Why practice this? Do we practice calling 112? Try that and they'll send real cops after you!
The point is the countless dress rehersals on a frequency that should be reserved for the real thing.
And yes, there is a place for 121.5 in commercial aviation. ATC loses contact with aircraft countless times every day, for reasons other people have already explained. Think about it...