Why are the Giovanni or the Hecata viewed so poorly by players.

From what I have seen it seems that Clan Giovanni or the modern day Hecata aren't very wildly popular at large with the player base. Many people seem to love Clans like the Toreador or the Tzimisce or the Tremere or the Brujah and Malkavians. All of which I also love but my favorite Clan seems to more viewed like the Ravnos as Yeah that Clan exists. I'm curious how people feel about the Clan of Death. Please give me your honest opinions.