As a DM, I want level 1 PCs to be afraid. I like the turnaround as they grow; to be able to look at something that could have crushed you not so long ago before you kill it (and then find out that this time, it was only fodder for something far worse). This appears to be a sentiment shared by at least some others, I'm happy to see.
I also want to be able to rationalize 1st level NPCs dying really quickly. If everyone's tough, it changes the whole dynamic of the world. Why are orcs threatening if they *can't* slaughter ordinary humans? With that in mind, I would prefer there be less distance between a level 1 commoner an a starting adventurer, not more.
If you want PCs to start tough, start at higher levels. Easy enough.