Essay Outline:

Title: "Sharing is Caring"

Thesis Statement: If you ask me, I think sharing is overrated.  

TS: Parents and kindergarten teachers are always emphasizing sharing for its benefit in a child's character.

 SP 1: good-natured.

 SP 2: better team player.

 SP 3: easier to handle.

 SP 4: less expensive.

TS: "Sharing" is not as great as what parents and teachers claim it to be.

 SP 1: quarrels.

 SP 2: gullibility.

SP 3: spreading diseases.

 SP 4: lazy guardians. 

TS: Learning to share is an important skill for children, but it is not a priority.

 SP 1: respecting rules.

 SP 2: understanding boundaries.

 SP 3: strong personality.

Conclusion: Bottom line is, "Sharing is NOT Caring" if it is not done by will and convenience.