Marriage Ⅱ

Why do people get married? What for?
For love, for children, for life, for money, there are a lot of reasons to get married.

In Japan, some people say that over 30-year-old women are difficult to get married and I believe that.
When my ex-boyfriend proposed to me, I was a 25-year-old.

In Japan, some people say that women over 30 years old have difficulties getting married and I believe that. 

When my ex-boyfriend proposed to me, I was 25 years old. 

I thought that if I refuse it now, I couldn't get married someone in future and I might not be happy.

I had been get hung up on values of around too much.

I thought that if I refuse it now, I couldn't get married to someone in the future and I might not be happy.
I had gotten hung up on those values too much. (I admit I'm not sure what you meant by "on values of around too much")

Marriage isn't necessarily bringing happiness and everyone ought not to get married.

Marriage doesn't necessarily bring happiness and not everyone should get married.

If I have a chance to meet someone who I really love and I hope to glow old with him, I get married.

If I have a chance to meet someone who I really love and hope to grow old with, I'll get married.