As for ocean acidification, it's a pretty big deal: https://en.wikipedia.org/wiki/Ocean_acidification#Predicted_...
"Importantly, the rate of change in ocean acidification is much higher than in the geological past. This faster change prevents organisms from gradually adapting, and prevents climate cycle feedbacks from kicking in to mitigate ocean acidification. Ocean acidification is now on a path to reach lower pH levels than at any other point in the last 300 million years.[81][71] The rate of ocean acidification (i.e. the rate of change in pH value) is also estimated to be unprecedented over that same time scale.[82][14] These expected changes are considered unprecedented in the geological record.[83][84][85] In combination with other ocean biogeochemical changes, this drop in pH value could undermine the functioning of marine ecosystems and disrupt the provision of many goods and services associated with the ocean, beginning as early as 2100.[86]"
See also: https://en.wikipedia.org/wiki/Ocean_acidification#Impacts_on... https://en.wikipedia.org/wiki/Ocean_acidification#Other_impa... https://en.wikipedia.org/wiki/Ocean_acidification#Impacts_on...
Guess what, you should feel bad. History and your descendants will judge the hell out of you. Billions will die and your small part, while certainly not the cause, will still be pinned to you for your acquiescence to it being “too hard” to change.
Now, if everyone in the developed world got this message suddenly change isn’t so hard.