If people are afraid to have their heart broken, then they will also be afraid of love, they will reject it (I'm talking about all kinds of love here).
However, all experiences in life are here to help us grow and evolve. And growth on a personal and individual level is more important than growth on any other external level in life, material or not.
I know many people who have been hurt so many times that they have closed their hearts.
What happens, unfortunately in many cases, is that those same people simultaneously substitute that love that they long for with external distractions which will for the most part be material, but they can also not be material, at least not directly.
Just some examples of material substitutes would be obsession with one's career or what kind of house or car one owns etc.
Some examples, which I think are much more pervasive but nonetheless actually less conspicuous and even trendy - to such an extent that they are even considered "normal" - are attention-seeking, thrill-seeking behavior, obsessive preoccupation with what other people think and/or do, in some cases nothing short of full blown narcissism.
Overall, in many cases - conditions that I would say are nothing else than mental diseases which have affected so many people worldwide that the global consensus is that these conditions are normal only because "everybody else is like that".
However, I believe that it's a sickness in our society all the same, and I think it could be the end of us.
I am quite certain that it "will" be the end of us unless something changes.
So how can we stop this sickness?!
This is not some kind of change that will occur with some kind of global movement or therapy or media outcry or anything of the sort.
This is a change that happens and needs to happen individually and "within" every individual.