Speaking only for myself, if a QB is available at #4 that the scouts grade as a Top 5 pick, you take him no questions asked simply due to the importance of the position. I concede your point about these QB not being once in a lifetime type prospects simply because the odds of that being the case any given year are very small.
That said, it seems, based on what I have read, that next years QB class may be worse than this years. So how long do we wait to try to find our next franchise QB? Do we wait until a particular draft class is deemed good enough? Do we wait until Romo hangs em up? Do we wait until we have another Top 5 pick? Do we continually spend mid-to-late round picks hoping to find the next Brady? Again speaking only for myself, part of the frustration is that this organization has shown itself to be pitiful when it comes to transition plans at the QB position. Look at their track record after Aikman.....ugly. How many of our current star players' careers are we going to waste while they try to figure out what to do with the QB position post-Romo?
There is no way to validate this assertion but I would bet that if organizations like New England or Denver or Arizona found themselves in our position (star QB late in their career, missed most of previous season with injuries, Top 5 pick) they would take a QB if one graded out to be worth it.
All of this is moot if there is no QB worth the pick at #4, and if that is the case, I will fully support a DE, LB or S, but so far everything I have seen or read tells me that either Wentz or Goff are worth the #4 pick.