Because they are just as willing to get themselves killed as they are their enemies. The whole species is insane, their hybrids are insane, even when mixed with good Romulan stock.

𝑇ℎ𝑒 𝑐𝑜𝑙𝑜𝑛𝑒𝑙 𝑤𝑎𝑡𝑐ℎ𝑒𝑑 𝑡ℎ𝑒 𝑚𝑒𝑠𝑠𝑎𝑔𝑒, 𝑠𝑖𝑡𝑡𝑖𝑛𝑔 𝑏𝑎𝑐𝑘 𝑎𝑛𝑑 𝑤𝑜𝑛𝑑𝑒𝑟𝑖𝑛𝑔 𝑤ℎ𝑎𝑡 ℎ𝑎𝑑 𝑝𝑟𝑜𝑚𝑝𝑡𝑒𝑑 𝑡ℎ𝑖𝑠 𝑎𝑡𝑡𝑒𝑚𝑝𝑡 𝑡𝑜 𝑐𝑜𝑛𝑡𝑎𝑐𝑡 ℎ𝑖𝑚.

𝐻𝑜𝑤 𝑐𝑢𝑟𝑖𝑜𝑢𝑠...ℎ𝑜𝑤 𝑠𝑢𝑠𝑝𝑖𝑐𝑖𝑜𝑢𝑠...

-𝘢𝘯𝘥 𝘶𝘯𝘥𝘦𝘳𝘴𝘵𝘢𝘯𝘥 𝘵𝘩𝘪𝘴...𝘯𝘰𝘵𝘦 𝘵𝘩𝘦 𝘮𝘰𝘯𝘪𝘵𝘰𝘳? 𝘛𝘩𝘦𝘴𝘦 𝘮𝘦𝘴𝘴𝘢𝘨𝘦𝘴 𝘺𝘰𝘶 𝘴𝘦𝘯𝘵? 𝘕𝘰𝘸 𝘐 𝘢𝘮 𝘨𝘰𝘪𝘯𝘨 𝘵𝘰 𝘳𝘦𝘮𝘰𝘷𝘦 𝘺𝘰𝘶𝘳 𝘦𝘺𝘦𝘭𝘪𝘥𝘴, 𝘴𝘰 𝘺𝘰𝘶 𝘤𝘢𝘯 𝘴𝘵𝘢𝘺 𝘧𝘰𝘤𝘶𝘴𝘦𝘥 𝘰𝘯 𝘸𝘩𝘢𝘵 𝘪𝘴 𝘰𝘯 𝘵𝘩𝘦 𝘴𝘤𝘳𝘦𝘦𝘯..."

-𝘮𝘦𝘴𝘴𝘢𝘨𝘦𝘴...𝘵𝘴𝘬, 𝘩𝘰𝘱𝘱𝘪𝘯𝘨 𝘰𝘯𝘵𝘰 𝘵𝘩𝘦 𝘴𝘶𝘣𝘴𝘱𝘢𝘤𝘦 𝘦𝘮𝘪𝘵𝘵𝘦𝘳 𝘸𝘪𝘵𝘩 𝘢 𝘭𝘰𝘸 𝘱𝘰𝘸𝘦𝘳 𝘰𝘷𝘦𝘳𝘭𝘢𝘺. 𝘕𝘰𝘵 𝘵𝘦𝘳𝘳𝘪𝘣𝘭𝘺 𝘤𝘭𝘦𝘷𝘦𝘳."

𝘏𝘦 𝘱𝘪𝘤𝘬𝘦𝘥 𝘶𝘱 𝘢 𝘴𝘤𝘢𝘭𝘱𝘦𝘭, 𝘸𝘢𝘵𝘤𝘩𝘦𝘥 𝘪𝘵 𝘧𝘭𝘢𝘴𝘩 𝘪𝘯 𝘵𝘩𝘦 𝘭𝘪𝘨𝘩𝘵.

"𝘈𝘴 𝘐 𝘴𝘢𝘪𝘥, 𝘐 𝘥𝘰 𝘸𝘪𝘴𝘩 𝘵𝘰 𝘣𝘦𝘭𝘪𝘦𝘷𝘦 𝘺𝘰𝘶, 𝘺𝘦𝘵 𝘵𝘩𝘦 𝘧𝘢𝘤𝘵𝘴 𝘥𝘪𝘴𝘱𝘳𝘰𝘷𝘦 𝘵𝘩𝘪𝘴. 𝘐 𝘸𝘪𝘴𝘩 𝘧𝘰𝘳 𝘺𝘰𝘶 𝘵𝘰 𝘴𝘦𝘦-

-𝘯𝘰 𝘳𝘦𝘢𝘴𝘰𝘯 𝘵𝘰 𝘣𝘦𝘵𝘳𝘢𝘺 𝘺𝘰𝘶𝘳 𝘵𝘳𝘶𝘴𝘵!" 𝘵𝘩𝘦 𝘮𝘢𝘯 𝘸𝘩𝘪𝘴𝘱𝘦𝘳𝘦𝘥, 𝘮𝘰𝘶𝘵𝘩 𝘥𝘳𝘺 𝘸𝘪𝘵𝘩 𝘧𝘦𝘢𝘳 𝘢𝘴 𝘩𝘦 𝘸𝘢𝘵𝘤𝘩𝘦𝘥 𝘵𝘩𝘦 𝘭𝘪𝘨𝘩𝘵 𝘨𝘭𝘪𝘯𝘵 𝘰𝘧𝘧 𝘵𝘩𝘦 𝘪𝘮𝘱𝘭𝘦𝘮𝘦𝘯𝘵𝘴 𝘭𝘢𝘪𝘥 𝘰𝘶𝘵 𝘰𝘯 𝘵𝘩𝘦 𝘮𝘰𝘣𝘪𝘭𝘦 𝘵𝘳𝘢𝘺.

"𝘐 𝘸𝘰𝘶𝘭𝘥 𝘭𝘪𝘬𝘦 𝘵𝘰 𝘣𝘦𝘭𝘪𝘦𝘷𝘦 𝘺𝘰𝘶, 𝘕𝘢𝘳𝘥𝘶𝘬, 𝘐 𝘵𝘳𝘶𝘭𝘺 𝘸𝘰𝘶𝘭𝘥...𝘩𝘰𝘸𝘦𝘷𝘦𝘳, 𝘸𝘦 𝘪𝘯𝘵𝘦𝘳𝘤𝘦𝘱𝘵𝘦𝘥 𝘺𝘰𝘶𝘳 𝘭𝘢𝘴𝘵 𝘧𝘦𝘸-

-𝘮𝘰𝘯𝘴𝘵𝘳𝘰𝘴𝘪𝘵𝘺 𝘺𝘰𝘶 𝘢𝘳𝘦 𝘦𝘯𝘨𝘢𝘨𝘪𝘯𝘨 𝘪𝘯. 𝘚𝘰 𝘧𝘢𝘳 𝘐 𝘩𝘢𝘷𝘦𝘯'𝘵 𝘴𝘦𝘦𝘯 𝘢𝘯𝘺 𝘦𝘷𝘪𝘥𝘦𝘯𝘤𝘦-"

"𝘠𝘰𝘶 𝘯𝘦𝘦𝘥𝘯'𝘵 𝘭𝘪𝘦 𝘵𝘰 𝘮𝘦, 𝘐 𝘢𝘮 𝘮𝘦𝘳𝘦𝘭𝘺 𝘤𝘶𝘳𝘪𝘰𝘶𝘴 𝘪𝘧 𝘵𝘩𝘦𝘳𝘦 𝘪𝘴 𝘢 𝘱𝘢𝘵𝘵𝘦𝘳𝘯."

"𝘛𝘩𝘦𝘳𝘦 𝘪𝘴...𝘣𝘶𝘵 𝘪𝘵 𝘪𝘴 𝘤𝘭𝘢𝘴𝘴𝘪𝘧𝘪𝘦𝘥."

"𝘈𝘩𝘩...𝘰𝘧 𝘤𝘰𝘶𝘳𝘴𝘦."

-𝘵𝘩𝘦 𝘏𝘪𝘳𝘰𝘨𝘦𝘯𝘴 𝘢𝘵𝘵𝘢𝘤𝘬𝘪𝘯𝘨 𝘙𝘰𝘮𝘶𝘭𝘢𝘯𝘴? 𝘏𝘶𝘯𝘵𝘪𝘯𝘨 𝘱𝘦𝘰𝘱𝘭𝘦?"

𝘏𝘢𝘬𝘦𝘦𝘷 𝘵𝘩𝘰𝘶𝘨𝘩𝘵 𝘩𝘰𝘸 𝘮𝘶𝘤𝘩 𝘩𝘦 𝘩𝘢𝘵𝘦𝘥 𝘵𝘩𝘦 𝘢𝘳𝘳𝘰𝘨𝘢𝘯𝘵 𝘱𝘴𝘺𝘤𝘩𝘰𝘱𝘢𝘵𝘩 𝘰𝘯 𝘩𝘪𝘴 𝘷𝘪𝘦𝘸𝘴𝘤𝘳𝘦𝘦𝘯.

"𝘠𝘦𝘴, 𝘐 𝘢𝘮 𝘢𝘸𝘢𝘳𝘦 𝘰𝘧 𝘵𝘩𝘦 𝘳𝘶𝘮𝘰𝘳𝘴. 𝘐 𝘨𝘦𝘵 𝘵𝘩𝘦 𝘴𝘢𝘮𝘦 𝘢𝘭𝘦𝘳𝘵𝘴 𝘺𝘰𝘶 𝘥𝘰 𝘸𝘩𝘪𝘭𝘦 𝘥𝘰𝘪𝘯𝘨 𝘸𝘩𝘢𝘵𝘦𝘷𝘦𝘳-

-𝘥𝘪𝘴𝘢𝘨𝘳𝘦𝘦, 𝘪𝘵 𝘪𝘴 𝘮𝘦𝘳𝘦𝘭𝘺 𝘢𝘯 𝘢𝘤𝘤𝘶𝘳𝘢𝘵𝘦 𝘰𝘣𝘴𝘦𝘳𝘷𝘢𝘵𝘪𝘰𝘯 𝘰𝘧 𝘵𝘩𝘦 𝘤𝘶𝘳𝘳𝘦𝘯𝘵 𝘴𝘵𝘢𝘵𝘦 𝘰𝘧 𝘢𝘧𝘧𝘢𝘪𝘳𝘴. 𝘛𝘢𝘳𝘪𝘴'𝘴 𝘱𝘰𝘱𝘶𝘭𝘢𝘳𝘪𝘵𝘺 𝘵𝘰𝘰𝘬 𝘢 𝘩𝘶𝘨𝘦 𝘩𝘪𝘵 𝘭𝘦𝘵𝘵𝘪𝘯𝘨 𝘢𝘭𝘭 𝘵𝘩𝘰𝘴𝘦 𝘱𝘦𝘰𝘱𝘭𝘦 𝘥𝘪𝘦 𝘰𝘧 𝘣𝘭𝘰𝘰𝘥 𝘧𝘦𝘷𝘦𝘳, 𝘵𝘴𝘬 𝘵𝘴𝘬 𝘵𝘴𝘬...𝘸𝘰𝘳𝘴𝘦 𝘪𝘴 𝘳𝘶𝘮𝘰𝘳 𝘪𝘴 𝘵𝘩𝘢𝘵 𝘷𝘦𝘳𝘶𝘶𝘭 𝘚𝘦𝘭𝘢 𝘪𝘴 𝘣𝘶𝘴𝘺 𝘴𝘤𝘩𝘦𝘮𝘪𝘯𝘨 𝘢𝘯𝘥 𝘣𝘶𝘪𝘭𝘥𝘪𝘯𝘨...𝘵𝘦𝘭𝘭 𝘮𝘦, 𝘏𝘢𝘬𝘦𝘦𝘷, 𝘥𝘰 𝘺𝘰𝘶 𝘬𝘯𝘰𝘸 𝘢𝘯𝘺𝘵𝘩𝘪𝘯𝘨 𝘢𝘣𝘰𝘶𝘵-

-𝘪𝘵, 𝘵𝘰𝘰."

𝘏𝘦 𝘧𝘦𝘭𝘵 𝘵𝘩𝘦 𝘧𝘢𝘪𝘯𝘵𝘦𝘴𝘵 𝘧𝘭𝘪𝘤𝘬𝘦𝘳 𝘰𝘧 𝘢𝘮𝘶𝘴𝘦𝘮𝘦𝘯𝘵 𝘢𝘵 𝘵𝘩𝘦 𝘧𝘭𝘶𝘴𝘩 𝘰𝘧 𝘳𝘢𝘨𝘦 𝘵𝘩𝘢𝘵 𝘴𝘶𝘧𝘧𝘶𝘴𝘦𝘥 𝘊𝘰𝘭𝘰𝘯𝘦𝘭 𝘏𝘢𝘬𝘦𝘦𝘷'𝘴 𝘣𝘳𝘰𝘢𝘥 𝘧𝘢𝘤𝘦. 𝘙𝘪𝘨𝘩𝘵 𝘵𝘰 𝘵𝘩𝘦 𝘵𝘪𝘱𝘴 𝘰𝘧 𝘩𝘪𝘴 𝘦𝘢𝘳𝘴 𝘢𝘯𝘥 𝘵𝘩𝘦 𝘵𝘰𝘱 𝘰𝘧 𝘩𝘪𝘴 𝘣𝘢𝘳𝘦 𝘩𝘦𝘢𝘥, 𝘮𝘢𝘬𝘪𝘯𝘨 𝘩𝘪𝘮 𝘭𝘰𝘰𝘬 𝘭𝘪𝘬𝘦 𝘢 𝘴𝘵𝘶𝘣𝘣𝘦𝘥 𝘵𝘰𝘦.

"𝘠𝘰𝘶 𝘴𝘱𝘦𝘢𝘬 𝘵𝘳𝘦𝘢𝘴𝘰𝘯, 𝘈𝘷𝘰𝘹...𝘺𝘰𝘶 𝘬𝘯𝘰𝘸 𝘵𝘩𝘢𝘵, 𝘳𝘪𝘨𝘩𝘵?"

"𝘛𝘳𝘦𝘢𝘴𝘰𝘯? 𝘐 -

-𝘴𝘦𝘦𝘬𝘪𝘯𝘨 𝘵𝘰 𝘩𝘢𝘳𝘯𝘦𝘴𝘴 𝘵𝘩𝘦-"

"𝘚𝘱𝘢𝘳𝘦 𝘮𝘦, 𝘊𝘰𝘭𝘰𝘯𝘦𝘭," 𝘈𝘷𝘰𝘹 𝘴𝘪𝘨𝘩𝘦𝘥, 𝘭𝘦𝘢𝘯𝘪𝘯𝘨 𝘣𝘢𝘤𝘬 𝘢𝘯𝘥 𝘣𝘳𝘶𝘴𝘩𝘪𝘯𝘨 𝘢𝘵 𝘩𝘪𝘴 𝘴𝘭𝘦𝘦𝘷𝘦 𝘸𝘪𝘵𝘩 𝘰𝘣𝘷𝘪𝘰𝘶𝘴 𝘥𝘪𝘴𝘪𝘯𝘵𝘦𝘳𝘦𝘴𝘵, "𝘛𝘢𝘳𝘪𝘴, 𝘪𝘴 𝘪𝘯 𝘢 𝘵𝘦𝘯𝘶𝘰𝘶𝘴 𝘱𝘰𝘴𝘪𝘵𝘪𝘰𝘯 𝘢𝘵 𝘣𝘦𝘴𝘵, 𝘤𝘢𝘴𝘵𝘪𝘯𝘨 𝘢𝘴𝘪𝘥𝘦 𝘵𝘩𝘦 𝘯𝘦𝘦𝘥𝘴 𝘰𝘧 𝘵𝘩𝘦 𝘌𝘮𝘱𝘪𝘳𝘦 𝘸𝘪𝘵𝘩 𝘩𝘦𝘳 𝘯𝘦𝘦𝘥 𝘵𝘰 𝘥𝘦𝘢𝘭 𝘸𝘪𝘵𝘩 𝘵𝘩𝘪𝘴...𝘴𝘪𝘤𝘬𝘯𝘦𝘴𝘴...𝘴𝘩𝘦 𝘤𝘢𝘶𝘨𝘩𝘵 𝘧𝘳𝘰𝘮 𝘵𝘩𝘦 𝘐𝘤𝘰𝘯𝘪𝘢𝘯𝘴. 𝘐 𝘩𝘦𝘢𝘳 𝘺𝘰𝘶 𝘩𝘢𝘷𝘦-

-𝘴𝘵𝘪𝘭𝘭 𝘤𝘩𝘢𝘴𝘪𝘯𝘨 𝘢𝘣𝘰𝘶𝘵 𝘸𝘪𝘵𝘩 𝘛𝘢𝘳𝘪𝘴, 𝘭𝘰𝘰𝘬𝘪𝘯𝘨 𝘧𝘰𝘳 𝘐𝘤𝘰𝘯𝘪𝘢𝘯 𝘨𝘩𝘰𝘴𝘵𝘴 𝘪𝘯 𝘵𝘩𝘦 𝘳𝘶𝘣𝘣𝘭𝘦 𝘰𝘧 𝘥𝘦𝘢𝘥 𝘸𝘰𝘳𝘭𝘥𝘴, 𝘏𝘢𝘬𝘦𝘦𝘷? 𝘞𝘩𝘺𝘦𝘷𝘦𝘳 𝘸𝘰𝘶𝘭𝘥 𝘐 𝘤𝘰𝘯𝘤𝘦𝘳𝘯 𝘮𝘺𝘴𝘦𝘭𝘧 𝘸𝘪𝘵𝘩 𝘸𝘩𝘢𝘵 𝘺𝘰𝘶 𝘥𝘰𝘪𝘯𝘨, 𝘩𝘮𝘮?"

𝘏𝘢𝘬𝘦𝘦𝘷 𝘭𝘦𝘢𝘯𝘦𝘥 𝘧𝘰𝘳𝘸𝘢𝘳𝘥, 𝘨𝘭𝘢𝘳𝘪𝘯𝘨.

"𝘛𝘩𝘦 𝘐𝘤𝘰𝘯𝘪𝘢𝘯𝘴 𝘢𝘳𝘦 𝘩𝘢𝘳𝘥𝘭𝘺 𝘨𝘩𝘰𝘴𝘵𝘴. 𝘛𝘩𝘦 𝘗𝘳𝘢𝘦𝘵𝘰𝘳 𝘪𝘴 𝘪𝘯𝘷𝘦𝘴𝘵𝘪𝘯𝘨 𝘪𝘯 𝘰𝘶𝘳 𝘱𝘦𝘰𝘱𝘭𝘦𝘴' 𝘧𝘶𝘵𝘶𝘳𝘦, 𝘴𝘦𝘤𝘶𝘳𝘪𝘯𝘨 𝘰𝘶𝘳 𝘴𝘢𝘧𝘦𝘵𝘺 𝘣𝘺-

They can survive a long time without a host, in truth they don't require one. The Trill just enjoy flaunting their worm hard drives.

-𝘴𝘦𝘯𝘴𝘦 𝘰𝘧 𝘰𝘵𝘩𝘦𝘳𝘯𝘦𝘴𝘴.

𝘖𝘧 𝘦𝘮𝘰𝘵𝘪𝘰𝘯𝘴.

𝘕𝘰𝘵 𝘵𝘩𝘦 𝘧𝘢𝘪𝘯𝘵 𝘵𝘸𝘪𝘯𝘨𝘦𝘴 𝘩𝘦 𝘶𝘴𝘶𝘢𝘭𝘭𝘺 𝘧𝘦𝘭𝘵, 𝘣𝘶𝘵 𝘴𝘵𝘳𝘰𝘯𝘨 𝘢𝘯𝘥 𝘰𝘧𝘵𝘦𝘯 𝘤𝘰𝘯𝘧𝘶𝘴𝘪𝘯𝘨.

𝘠𝘦𝘵 𝘭𝘰𝘷𝘦 𝘯𝘦𝘷𝘦𝘳 𝘸𝘢𝘴.

𝘚𝘩𝘦 𝘭𝘢𝘶𝘨𝘩𝘦𝘥, 𝘶𝘯𝘴𝘦𝘦𝘯 𝘢𝘴 𝘵𝘩𝘦 𝘥𝘳𝘦𝘢𝘮 𝘧𝘦𝘭𝘭 𝘢𝘸𝘢𝘺 𝘭𝘪𝘬𝘦 𝘨𝘰𝘴𝘴𝘪𝘮𝘦𝘳 𝘪𝘯 𝘢 𝘨𝘢𝘭𝘦.