Wait wait wait wait. You're unwilling to have a pet because it will probably die before you? How the hell is that even remotely in the springtime of youth? That is like never dating because few such relationships end in anything but heartbreak.
The thing is, Zeality, life is like visiting Paris. You can't just read the guidebook, you've got to throw yourself in. Eat the food, use the wrong verbs, get charged double and end up kissing complete strangers.
Or is that just me?
Sure, there will be heartbreak, but pets bring a lot of joy to life as well. You're not going to stop living just because you are afraid of death, are you? Why avoid living, then, because you are afraid others might die? As Anatole France said, "until one has loved an animal, part of one's soul remains unawakened."