There was a time when some folks killed a few lowbies (usually in one sweep through a zone) in order to try and draw out their factions higher level wpvpers. In this context, a few lowbie bodies is acceptable. Camping, griefing, or otherwise going out of your way to prevent them from moving on with the game though is pretty lame.
Personally I'll have my toggle on at all times. For blood and glory!
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Masochist. I think.