Are you suggesting exploration, observation, study and research for earth similar planets, other life, etc be stopped or is somehow nonsense? .................................Nope, just saying it won’t affect us here and now. None of us will be on the first ship there. At the rate our planet is populating, we will need a place to go, unless we produce large amounts of Soylent Green. Who knows how far we can go in another 1,000 years? We may advance or we may be wiped out by a 25,000 mph asteroid within a century. Then again why worry when none of us know what the next day may bring. Light speed is still a thing of science fiction. Sounds like it would be a lot of fun flying through an asteroid belt at that speed.
Nope, just saying it won’t affect us here and now.
No one suggested that. Nothing is instant, not even instant coffee.
This should be pretty obvious.
I'm confident it's understood achieving capability of interstellar travel, detecting and identifying planets capable of supporting life, other life forms, communicating across the universe and developing technology other than conventional rocket ships, is going to take a bit of time.