Hi Sylvian, A Great post. Great that you were able to collate and organize so many things. Sysila??? what is it. Sorry for my ignorance.

Not ALL Arranged Marriages Fail:
Compromise is a Part of Life, even in a LIVE-IN it is necessary.
You are greedy - Not willing to share your property with your partner even.
There is no law that I know, states that you need to share your property with the person with whom you live-in. (If you consider money is a part of life)

I agree with you on //People live together because they love each other and not because they own each other.// But

A relationship is about LOVING and not OWNING. Why isn't it possible in marriages. Though your generalization is right, Nothing here is specific to marriages, Even a love relationship has a lot of OWNING stuff - THIS is related to individual behaviors. If you believe this, Get married and do what you believe about a relationship. Individuals can only break or continue LOVE.
Sometimes owning is a sense of security. You as an individual can like 10 others to dump the one who loves only you. What is the answer you have for her when you decide to DUMP.

@lakshana How do u feel, you will lose your identity. Sometimes your identity will never be established at all. Do you think the person you along with your parents chose will spoil your life goals and even after being fully convinced the man you chose was right for you? Not getting into a relationship or LIVE-IN will not help with you maintaining your identity either.

@Dilip Muralidharan You are right and I have no counters against this. However, let me also tell you within the confined limits it is you who makes the choice.

A Live-In cannot be a life of Understanding:
A Live-In relationship can never be a life of complete understanding for all. Consider initial fights over trivial matters can let the husband or wife to compromise and understand the other. This is not that easy when you Live-In he/she just moves away when things are not acceptable. Life is not about having positives all the time, there is a lot of negatives in every individual and sometimes a bonding like marriage is necessary. This allows one to be his/her own self.

How easy is it to get in to a LIVE-IN Relationship:
It is not that easy to get into a relationship and live-in as you mentioned. Probably you must be a romantic guy who can attract the opposite sex with ease, and live a life of romance. Not all can be a romantic like you. Why don't you consider arranged marriages are for people like them who cannot afford to be a romantic like you?

Horoscope Matches:
You have left one other aspect that goes into marriages, verifying horoscopes. There is a lot of research into this, even-though there are arguments around, to prove it wrong, I accept that stars play a role in a persons destiny and arranged marriages with a horoscope match will make the couple understand each other and live.

Nice Post but I am not for it. There are always bad things about a marriage, which can always happen in a LIVE-IN relationship as well. Marriages provide an additional security to either party.

Not able to comment further had a lot of points