The obstacles that arise between people can be regarded as a test of strength - is such a union really needed, is there enough strength and patience to be together? All the tests that are given are within our power, we ourselves construct the future.
An obstacle for love is like the wind for fire: it kills the weak, and inflates the strong ... For strong, real feelings, no obstacles are terrible, moreover, any obstacles only unite people. If this is a props and there are some cracks in the relationship, then the barrier plays the role of destruction.
The barrier is necessary for people to understand the value of choice and to realize responsibility. Thanks to her, there is a SENSE to go to the end or step back. Some, the test, binds even more tightly, while others, on the contrary, are thrown from each other in different directions and this is logical - the Universe removes unnecessary people.