You think love is weak because you (or the people you see) can't handle it and it makes you (or the people you see) weak. Whatever "weak" means anyway and whether what you call "weak" is really a weak or bad thing.
I would say the above, interestingly enough, makes what you said weak, by what is likely your own definition.
Also, love is not an emotion. Mistake #1, the basis of all mistakes regarding what people think love is.