I use the word love casually, but not until recent years have i realized it. 'I love that show', 'i love pizza', 'i love .. whatever'. In that context it is my way of saying 'i like this'.
But i also recognize the depth of the word in other contexts. When i say it to, or about, a person that's close to me, it means much more. It is purposefully said and has reasons i can support for why i say it.
I think the real misuse of love is how casually use it about others. People know one another a short time and start stating they love the other person.
But what makes the word love so easily cheapened is that we have one word that encompasses such a number of meanings. The Greeks had it right by having separate meanings for different kinds of love. They couldn't say 'i love X' to mean something casual but they had to specify what kind of love they felt. Which i, and i could be wrong, that it may have caused a more purposeful use of the word, since it had to be thought about more before being used.
Saying 'God loves you' or 'I love you' to your spouse, or a relative or child, are hard to distinguish because we have one basic concept of love. But the Greeks had words for each of these. Its more difficult to cheapen the meaning of five words rather than one.