What does "Love" mean to me?

I think Japanese people tend to hesitate when they use the word "love". Even though there's the person who I actually "love", probably I cannot say "I love you " to him or her. Instead of saying so, I say "I really like you." There's huge gap between "love" and "like".

Then, what is the meaning of "love"?
In order to define it, I considered where the love is.

I can say I love my family. There are some merits to be with my family, for example, I can have a house to live, meal to eat. However, if there's no merit to be with my family, nevertheless I want to be with my family, just because I love them. I think this is a factor of love.

In short, one meaning of "love" is to want to be with someone with no benefit.

I cannot say the word "love" now, but I want to say this word to someone I really think so.