well i am writting a essay on love and how i believe love is a life affirming experience essential to a worth while existence....well i need a thesis sentence which has 3 reasons why i think that...and i need some help comig up with that....well this is my whole essay so far...

Question

"and if i have prophetic powers, and all understand all mysteries and all knowledge, and if i have faith so as to remove mounains, but have not love, i am nothing." this quote shows that if i have all the powers and even the power to move mountains but i don't have love i am nothing. i believe love is a life affirming experience essential to a worth while existence because _______, _________, and _____________ i just need you guys to help me fill in the blaks thanks!

You have greatly misunderstood the quote you cited (without attribution). That passage is refering to the powers of the Holy Spirit, the quote means that without love, all of the other powers the Holy Spirit instills are meaningless. The love being in that passage is not romantic (eros) love, but unconditional (agape)love for fellow man. Your belief love is a life affirming experience essential to a worth while existance seems not to be centered on agape.
Now that is the crux of your delimina: You are seeking reasons for this, but you are not in fact sure what you mean by love itself.
Because I suspect you are thinking on eros love, the powerful bonding love of man and woman, work on defining why it leads to an essential existence. This has been the subject of many, many books, poems, and songs for centuries.
Here are a few of the reasons cited:
Love is a many-splendored thing,
It's the April rose that only grows in the early spring,
Love is nature's way of giving a reason to be living,
The golden crown that makes a man a king.
Once on a high and windy hill,
In the morning mist two lovers kissed and the world stood still,
Then your fingers touched my silent heart and taught it how to sing,
http://www.seeklyrics.com/lyrics/Frank-Sinatra/Love-Is-A-Many-Splendored-Thing.html
http://www.amherst.edu/~rjyanco94/literature/elizabethbarrettbrowning/poems/sonnetsfromtheportuguese/yetlovemereloveisbeautifulindeed.html
http://whitewolf.newcastle.edu.au/words/authors/S/ShakespeareWilliam/verse/sonnets/index.html In the sonnets, I think your question is answered: Look at sonnet XVIII, LVII. Of course, you may browse through these as Love is expressed and the bond very stong, as Shakespeare writes.
You may want to list a number of things, and concentrate on just three. For me, the reasons would include at least the two ideas here:
1) A passion for living
http://www.links2love.com/love_letters_14.htm

2) Our live changed totally and forever;
http://www.poemhunter.com/poem/first-love/

We will be happy to critique your thoughts. You have chosen a challenging subject for an essay.

This article might help you to become morre aware of the different types of love that bobpursley was discussing.

http://www.members.cox.net/dagershaw/lol/loveStyle.html

I hope this helps a little more. Thanks for asking.

Good article.