errr.. no, cause there are monsters like torama (i think that was its name, the one that looks like a tiger with long whiskers) and some others that have LV? death.
i think higher levels are more fun cause its harder and you find yourself facing a large variety of variables that affect the fights. that n the fact that you know that u could still get pwned at any given time (more often than the low levels)
besides, LV death is only one of countless 1-hit-ko attacks; don't remember well enough, but i think having status-df of death 100% stops it.