u/Dracaryssssss_

Ted and tracy both belonged to something else. You know the long term bf of tracy who died in her birthday. Both ted and tracy were the broken pieces of something else that were so perfectly broken, they completed each other.
They were happy, in love and completed each other. But still didn’t belong to each other.
So, himym basically shows that after everything happens, and life makes you the person you are, life always takes you to the place/person where you truly belong to.