My most significant "sacrifice" for mother earth was failing to breed. That is NOT WHY I did not have children, but the global impact is the same. A brief digression: often folks decry an abortion as the potential loss of a Bach or Newton, but rarely consider the just as likely loss of a Hitler or neighbor with 50 cats. Just saying, not breeding does not guarantee a net loss or benefit, but it does guarantee one benefit: one less lifetime human footprint.
And I have made other choices that involve trade offs (paying more to get a Prius even though I am a low mileage gal, so this was financially silly, and forsaking a THIRD trip to Antarctica as the two I had were amazing and really two too many carbon wise.) Also I have tried to be a conservative consumer, by not buying a lot of stuff or clothes. Additional disclosure here: I have owned 2 class B motorhomes, and a beach condo in earlier times. All of this is a portion of the exhaustive argument I have been having with myself as I considered, researched, and actually purchased a TOW VEHICLE.
I sold my last RV August 2017 as I was using it less and it needed more and more $$ upkeep $$. But I have been missing high season (anytime but summer) jaunts around, and summer dashes to the coast when there is a predicted 30+ degree temperature variance. Not wanting the additional cost and headaches of a second vehicle, I have began exploring light trailers that meet my glamping needs. It became apparent that my needs would not be satisfied by anything under 2500#, and hence not tow-able by my Prius (duh), or even a slightly less fuel efficient vehicle. So there I was, glumly researching what mgp sacrifice would need to laid at the alter of a new "escape pod solution".

Admission: I could have swapped my Prius for the RAV yesterday, but I needed time to start the grieving process and try to remove a favorite (as it is suggestive but no longer available) Dutch Bros. window sticker.