Ok, so it's not really love's fault. The fault actually lies with the way people perceive love. Allow me to explain.
When people say they've "found their soul mate", what do they actually mean by this? Do they mean that they've found the one person who will fulfill their lives? Do they mean that they've found the person they are destined to be with? Is this the only person in the world that's perfect for them?
I'm sure some people really do mean that, but are they right?
A lot of people look for a love to complete them. The believe that love will "make them happy." But this kind of thinking puts a great strain on any relationship. Surely no other person can "make" you happy. If you aren't happy to begin with, no one else can make you that way. If you are not already a complete person, no one else can make you that way.
I have a saying that, even though it has come back to bite me in the butt, I still believe in; You don't need to find a love to complete you, but one that will compliment you.
Love is not a cure-all. Love will not fix your life. And (big surprise) love will not fix someone else. If you are (or the other person is) a miserable, grouchy s.o.b., love is not going to fix that. If you don't know who you are, love isn't going to find that answer for you. Sure, you can base you life around the other person, dedicating your every waking moment to them and their happiness, but that still doesn't tell you who you are. Besides, you make wake up one day and find that the person you've based your life on is no longer there, and then what? What will you do then?
Tolkien wrote, "Nearly all marriages, even happy ones, are mistakes: in the sense that almost certainly (in a more perfect world, or even with a little more care in this imperfect one) both partners might have found more suitable mates. But the 'real soul-mate' is the one you are actually married to."
He was not being bitter, nor am I. I think love is very real, and that happy relationships are completely possible. I simply feel bad for people who refuse to help themselves and look for a love to do it for them. These people, more often than not, end up angry when the other person does not fix their life. When that "perfect match" ends up with some not-so-perfect traits, people chuck it all in and choose to look for someone else who is better.
You, and only you, can make yourself a complete and happy person.
Of course, this is all just personal opinion. Take it or leave it.