Maybe you lean that way because of your age, but I'm leaning that way because I've put in lots of time reading and watching the scientific video explanations of where we are today and how we got there. And obviously no one can really predict the foibles of human ego regarding wars and such, but when you can measure and observe and do the required calculations on an earth system like how climate has developed over millennia, it's not foolish to make predictions on what will happen if we continue to inject our environment with known toxins like methane and carbon dioxide.
Here's one more effect that has been observed but spoken about a lot less than other issues so far....and that is the slowing of the Gulf Stream in the Atlantic Ocean. The Gulf Stream brings warm water from the equator, up north and helps to stabilize the climate of Atlantic coast lines. As more ice melts in the Arctic, it injects fresh water into the salt ocean which changes how the current moves down along Canada/America's eastern coastline which ultimately impacts the Gulf Stream that moves back to the north.
I watched 3 climatologists talking about what would happen if that current slows too much and maybe stalls, and they all said it would cause the climate in the UK and Eastern Europe to become much, much colder which would impact their agriculture. While none of this will happen in our lifetimes and not even in the lifetimes of our children or maybe even grandkids, it seems to me that we have a responsibility to our descendants not to kill the 'golden goose' (our wonderful earth system) that has sustained us, before they arrive on the scene.
This is a really interesting 13 minute video for those who want a better explanation of how the Gulf Stream makes our world comfortable and livable.....