Because when you are expressing love to other people, it makes you feel good, and feel that you can accomplish a lot of great things in life. Setting aside if the other one will love you or not, when you are showing that you love the other one, what you did is actually letting other people know that you are taking good care of them.
Providing that you are not doing something that is disturbing (even if you are showing your love), expressing love to others indeed make the world a better place.
Imagine that you are showing love to others, in a way that is well accepted and they really thank you for doing that, how would you feel?
It is a 1 + 1 > 2, or what I called: love, multiplied.
Sometimes “Love” is not what you think
But some of you may feel hesitate about that, and hence not doing that. They don’t know if they will be hurted, or feeling disappointed when you love others.
“Yet again…” you may think. So you just want to be alone, because if you don’t love others, you will not get hurt.
People would stay away from you, knowing that you will not express any good feeling to them. By doing that you feel lonely further, you don’t trust any body, let go about “love”.
You are alone, no body wants to connect with you, just stay away from me please.
Is it something you “really” want?
How to be loved, without getting hurt, guaranteed?
The answer is, to attract someone you loved, and work hard to protect it.
But how? First of all you need to “update” your mind that, there is always something you need to work on, before getting the true love you want.
So believe that you will get the love you want, then sooner or later, you will start attracting someone/something that worth your love.
Then, you need to work with the other side to protect this worthy love, by communicating, exchanging ideas, compromising and let go of the past.
If you love, you love everything you got, the good, and the bad.
It’s just like if you have a dog, you love to play with them, but you also need to clean up its “mess” and “dog poop” it creates for you.
But you will not say “I love you but I don’t like it when it creates a lot of poop”.
If you love, you love. There is no “I love him/her if…” or “I love him/her but…”.