There's only one way to live forever, and I now know with certainty that commenting on Atheist Central will not get you there, more like lasciate ogne speranza, voi ch'intrate.
I would encourage you to take the time to just consider this in a different way. Animals that are loved are soulish, the incredible (but unfortunately not Catholic) Dr. Hugh Ross makes this easy to understand: http://www.reasons.org/articles/origin-of-soulish-animals. I would simply add that God allows us to form loving bonds with animals to provide a little heaven on earth --a loved [animal of your choice] is heaven on earth. But heaven being heaven, we won't need something as wonderful as our animal friends to make existence better.
Now if the misguided Puritans didn't have their way everybody would be able to die with the amount of dignity they need to make it to the end of the race. Why, because God has provided us with all the tools we need to control pain, but the powers-that-be (really they are the pain-givers either intentionally or just out of ignorance) deny this to us --think about all the places that put people in jail for growing a plant, or otherwise prohibiting scientists to their jobs to make things better.
My inner St Francis tells me that we euthanize animals at the correct time because of our love and respect for them, and there's no consequence for their souls. But for our fellow man, we provide care to its natural end so that we can all live forever.
Frank T. McAndrew did a great job with this article. I think about this stuff all the time because for me it's infinitely interesting, but in my case, I put a Catholic spin on it.
IMO as long as you make an effort to seek help from your professors in all of the classes you're having problems in, that is to say you actually go when they have their scheduled office hours so that they can figure out how to get you to understand what they are teaching; after all it is their job to be able to explain the material. Then at the very minimum you should pass the classes and eventually have what all deep thinkers all over the world have, a diploma.
If it's at all possible for you to get through college without going into debt with student loans then stick it out. And make the professors do their job by transmitting their knowledge in such a way that you understand it, and again the best way is to see them during their office hours. This way if you come up a little short on the exams they'll remember you and give a passing score (that's where pass/no pass can help out a lot if it's offered) Seriously I used that strategy myself in a couple of classes that I needed to pass and it worked.
I confess to being facetious with my comment which is probably not cool because though I believe this whole preoccupation with carbon emissions to be a scam, the idea of wasting energy bothers me on a natural level, so that long before global warming I washed my hands with cold water.
Every -phobia has a -philia, though the word "homophobia" was made up about 30 years ago or so, maybe they weren't thinking about the Homophile. I'd prefer to use standard english as to avoid confusion. What's wrong with somebody just saying whether or not they like or don't like sodomites, and skip all this newly infused terminology. And it wouldn't be depriving the SPLC of their love for attacking the intolerant. In this case their target would be those intolerant of sodomy --clear, simple and biblical.