The absence of confirmed time travelers from the future in our current time does not necessarily imply that time travel will never be invented. There are several potential explanations for why we have not encountered time travelers from the future:
Time travel may simply not be possible: It is possible that the laws of physics do not allow for time travel into the past or that the technical challenges involved are insurmountable.
Time travel could be limited or regulated: If time travel is possible, it may be constrained by certain limitations or regulations that prevent people from freely traveling to any point in time.
Preservation of the timeline: It is conceivable that if time travel were to exist, strict regulations or safeguards might be in place to prevent interference with the timeline. Time travelers may be instructed not to reveal their presence or engage in actions that could significantly alter history.
Lack of interest or incentive: Even if time travel were feasible, future societies might not prioritize or find it worthwhile to travel to our particular time period. They may have other concerns or priorities that do not involve interacting with past eras.
It is important to approach the question of time travel from a scientific perspective. While time travel remains speculative at present, ongoing scientific research and exploration could lead to new insights and discoveries in the future. As our understanding of the universe advances, so too may our understanding of the possibilities and limitations of time travel.