Here's why:

* Low boiling point: Helium has the lowest boiling point of all elements (-268.9 °C or -452 °F). This means it turns into a gas at extremely low temperatures.

* No solid state at atmospheric pressure: To turn helium into a solid, you need incredibly high pressure (about 25 atmospheres) and very low temperatures (around -272 °C or -458 °F).

So, while helium can exist as a liquid under specific conditions, it's primarily known as a gas in everyday scenarios.