Brass hose fittings are much more durable than plastic hose fittings. Unlike plastic hose fittings, brass fittings won’t blow off. Brass hose fittings are more robust, can handle higher temperatures, and last longer, but they are more expensive than plastic fittings. Even though plastic hose fittings have improved recently and are relatively strong, they can crack under pressure. It is unlikely that a brass fitting would crack or otherwise get damaged. Clearly, brass garden hose fittings perform better than plastic hose fittings.
Brass hose fittings and adaptors are ideal for travelling in a caeravan.