Compelled to Lie

As per Mehamad on Aisha's witness, a muslim is Allowed to Lie on the 3 following conditions:

1. To keep the peace in his house,
2. To protect himself (does not have to be fear of death, no such drama in Islam)
3. To bring peace among people.

Now, why else would someone lie if it is not for those 3 reasons?
- Maybe For profit? that is called stealing and is covered under other bands.
- Maybe Compulsive Lying? That is a psychological disorder.
- So Beside, lying at home, lying to get rid of enemies and lying to get others to agree. Why else would someone need to lie?
- Plz add what reason you think a mohamedean might need to lie but he can't.