I have traveled long distances many times. You THINK that you need these big horns, but you really don't.
People use these pressure horns on their bikes "for fun" or for "Showq".
Our people in Pakistan "abuse" horns. I myself have reduced my use of horn to a bare minimum, and only feel the need to use them when i am:
1. At a corner ~ To signal my presence to any incoming person or vehicle.
2. At a Chowk ~ For the same reason above.
3. Over taking at high speeds
4. "Asking" for a place to overtake.
People in Pakistan hardly know about traffic laws, let along knowing about "when" or "how" to use the Horn. Idar bus "pressure horn" laga do har banday k kaan phaarnay k liye, ya phir dil ki bharass nikalnay k liye ...
P.S. A disclaimer is necessary here. Because i am talking from 'experience'. Its not like i have never loved this thing of Pressure Horns and stuff.