Time travel makes everything else make no sense

They can basically time travel at will, it's barely an inconvenience from how casually the characters talk about it in this movie.

Even if you think of it from the perspective of 'saving a planet' or 'saving the Starfleet', it still makes no sense.

This topic is big, it has to do more with the 'Star Trek Universe' than this exact movie, but where am I going to talk about it other than the most obvious 'time travel' movie?

This problem always rears its ugly head when writers want to just create 'magical, fun thing' without considering the MASSIVE implications (yep, those pesky implications again..) of what they just introduced/did.

There have been 'almost-omnipotent' beings in this series, that, weirdly enough, exhibit exactly what kind of morals these captains have.

Time travel is almost like a sling ring or 'the Force(tm)', because it's similarly super powerful problem-solver, that our 'heroes' are VERY reluctant to use much for solving problems it easily could. Why don't the 'good guys' EVER use these 'overpowered' abilities almost at all? Think of Luke in the insane intro of the third movie - no force usage whatsoever except the tiny handwave that doesn't work with Jabba.

Throwing a rock, wrestling a lower creature and so on, instead of levitating a rock, or better yet, operating a switch remotely and controlling the creature's mind and so on. Have to shake my head.

The less I mention the RIDICULOUSLY under-used, super powerful sling-rings that would have solved about all the problems almost instantly, the better. Boggles the mind.

Time travel is used to save the Earth, OK, I get it. But now the implications start running.

When is time travel the choice solution, and when isn't it, and why and why not, etc..?

So it's OK to save Earth with it, but it's not OK to save another planet or solar system with it? How about ALL those red shirts you could now save with time travel? No? Kirk doesn't care about his crewmembers if they wear a red shirt?

What about ALL those tragedies the crew could easily have prevented with time travel? No? Let all that pain just happen, all those people die (even en masse sometimes), etc.?

As a sidenote, they have access to the most powerful beings in all existence, and they don't simply ask them things like 'Erase Borg' or 'Bring Tasha Yar back' or or or..? EVEN when those beings are almost begging them to let the powerful beings help the crew. It's 'no, we don't need you' (although hundreds of lives could be saved, tragedies prevented, and so on)

Time travel could rescue and save, prevent the deaths/pains/injuries/etc. of EVERY SINGLE red shirt, all damage, and so on and so forth. Heck, Q or even Gothos could keep everyone 'eternally young' (though transporters should already be able to do that) and give them an ESP ability to know the future way before they stumble upon a danger..

What I am trying to get at, is what are the priorities here? Why is it OK to save Earth, but not another planet with time travel? Why is it OK to save a group of people, but not another? Think of what they could do for the two planets that have been in this weird 'virtual war' for hundreds of years, where they just walk into those suicide booths when the computer tells them to? What if they went back in time before the wars even started and prevented it all from happening?

I get it, writers want to have a 'magical adventure' on the silver screen, so they bring in super powerful concepts like time travel, but once you open that bottle, especially when you can just do it that casually ("Start your computations for time travel!"), you should have a priority list and reasoning why you want to do (this) thing with time travel, but not (that) thing.

Every single problem in all the movies and shows could be prevented, fixed, healed or solved with time travel, so what creates the reluctance to use it? If you can use it that easily, WHY are they not using it to solve the major crises like 'Borg' (just go to moments before they became Borg and destroy them all - problem solved)...?

BTW, even in this movie - why can't Spock simply tell the wales in the 1980s to just tell the probe what is going to happen in the future, so the probe doesn't have to come to destroy all life on Earth, so the whales won't even have to be transported into the future? I mean, the communications between the whales and the probe have been going 'forever', right? So why would the whales need to go to the future?

Time travel makes everything meaningless - so, Picard lost, what, 18 people or 180 people (makes no difference) due to the 'Borg' thing, so why not ask Q to give those people back or make it not have happened, or destroy Borg or go back in time to prevent THAT from happening, etc.?

Where was Guinan, when Picard was being arrogant? Shouldn't she have sensed the future and gone to Picard's office to tell him EXACTLY what is going to happen if he's arrogant, and beg him to tell Q he needs Q..?