My answer is that it's better to love and lose rather than never to love. Love is part of who we are; it rests in our very soul and isn't something external to ourselves. To deny or shun love is to reject part of what makes us alive and real. And even when love seems to elude us or bring only harm, the fact is that all of us have at some time experienced it's incredible power. Lost love sucks and that's the truth, but I think the only answer is to get up, give ourselves the time we need to regroup, move on and embrace the world once again.
I don't mean love as something necessarily sexual, by the way. There are many people whom I love - some intensely - but in a fraternal way involving caring, affection, interest and whatever personal engagement I can offer at the moment, but which I would never wish to express sexually. And when I type out "much love" yet again, even after many thousands of times (it's not part of my automatic sign-off), it's still a special moment for me. So here it comes again, James:
Nobody living can ever stop me
As I go walking my freedom highway.
Nobody living can make me turn back:
This land was made for you and me. (Woody Guthrie)