Answer:
The core reason to travel to the future is to find out what will happen, and if it's the case, to avoid or maintain that future.
Step-by-step explanation:
A time traveler interested to find out what happens in the future must keep in mind that it's an enormous responsibility. The traveler will have the opportunity to know if the future will be good or bad. Then, when he comes back to his time period, the traveler must work to avoid or maintain the future he saw. There's no other reason to travel to the future.