In a tabletop session, players would be outraged if the DM said 'and you all die, no combat, the end.'
I dunno ... it have exactly same outcome as attacking level 10 dragon ... on level 4. O_o
It just saves time like this.

And since we are not on a tabletop session ... and we CAN reload (on contrary to them) ... i would certainly preffer saving time. O_o