Why is the problem of the freedom of the will so hard to solve?

I personally think there are people who want 'free will' for themselves, but not for everyone else. Some want to control others but have total control over themselves.

Example: Some persons feel it is their right to smoke inside crowded buildings. The only problem is their second-hand smoke is sickening others, dirtying the walls and leaving a smell in the room. Others become seriously ill, others have to clean the walls and floors and everyone has to wash their hair and clothes, all from an exercise of 'free will' of one person.

God gave all of His intelligent creatures a 'free will', but Jesus Christ taught us we will have to learn to love our neighbors and practice 'self-sacrifice' before exercising our own personal 'free will'.