Does love exist?

"I love you".
This is perhaps the most invigorating words to hear, yet the most overused words as well. And I say this because I see/hear people use the word 'love' for almost anything and everything that makes them happy or gives them pleasure.
"I love my mom, my dad, my sis!"
"I love chocolates!"
"I love my new job!"
"I love Parineeti!"

I have heard people use the word 'love' so much that I had started to doubt its credibility and for sometime now I also wonder if 'love', not just as a word but also as a concept really exists?!

You say you like someone/something, its usually attraction. You get to know that person, it becomes affection and when you two spend enough time together, know each other and are comfortable in each others' presence/lives, that's attachment. Beyond that people say its true love.
Then there's care, compassion, worry... and many more such emotions that happen due to "love" for someone.

The way I see it, love is like a soul, unseen and not noticeable to almost all of us. Whereas other emotions/feelings like care, attraction, compassion, worry etc. can be perceived and well defined, like various body organs. They're tangible, understandable and can be attended to.
Or love is this entity that shows itself once in a while in these other emotions/feelings.
Or love is the amalgamation of all these emotions.
Or love manifests itself in various forms.
Or love isn't real, it doesn't exist. Its just a concept of convenience, a word to be used if you feel anything like care, affection, attachment, attraction, anxiety, about someone/something consistently!

Deep Dive:
Also, sometimes I think we feel that love between two young people is different from love between parent and child or love between siblings or love between friends, or even love of a person for his work or some particular subject. The truth is that we confuse all this by calling each one of these emotions as love. Each emotion is different. Parents pamper, scold, worry about, encourage their kids; siblings/friends fight, share, care for each other, pull each other's leg, and in many cases are ready to die to save the other person; a person can spend sleepless nights working on a big project or learning more about some subject. All these examples show a certain connection between two entities that we call love. But then we say love should always be good, but its not! Love also hurts when the relationship suffers due to some reason. Is it really love that hurts you or the failure, the mismatch of expectations, the lack of commitment? Is it fault of love, really?
Love is what we want love to be. Its like God, a man made entity. It is the emotion we must identify, it is the reason behind the joy or sorrow that we must identify. Then we will know that love is just a word of convenience that we call the connection we establish with another person or thing.