While it's unfortunate that you can't see the danger, it's comforting that that view is increasingly "unpopular."
Let's take the "risk of running out of fossil fuels without being prepared" as an example. Absolute tripe. A fiction bordering on incoherence. First of all, there is no "risk" of the scenario you have described, in the sense that the probability of "running out without being prepared" are indistinguishable from 0. Fossil fuel prices will climb. Transportation and energy prices will climb to the point that some forms of transport and some uses of energy will either become unaffordable or change to the second-best option (relative to now). This is already happening with hybrid and electric vehicles and wind and solar energy. It will just continue. We won't "run out" in the sense that we've mined the last lump of coal or pumped the last drop of oil. Rather, the costs of extraction will climb until it's no longer feasible to extract. This takes time, and one of the mechanisms that drives that time scale is cost. On this matter, we can breathe a sigh of relief.
On the other hand, the collapse of the ecosystem, or it's (or large parts of it's) sudden transition into a new dynamic regime, is not at all unlikely on the face of it. Mussel shells are an example of a large change due to ocean acidification over the last 50 years: https://news.uchicago.edu/story/mussel-shells-much-thinner-5... . Whole sardine fisheries have collapsed. (It'll be interesting to see if the increase in microplastics will build to a threshold that leads to a sudden die-off of plankton-feeding whales. It's not difficult to imagine a system with that much lag building to an irrevocable state.) The bread basket of the United States is a happy coincidence of wind-blown silt from the Rockies and weather. That good weather is moving north into Canada. These all represent signals from gigantic systems that are careening out of whack. Here, we can only cross our fingers. And hold our breath.
"Running out of fossil fuels" is not the problem. The problem is quitting them before we destroy the systems that keep us alive.