Dogs.
Dogs are awesome.
Once you happen to know them, they are more than friends, they become a part of yourself while you're not even aware of it.
They never judge you whoever you are, they make you smile and laugh with their goofiness, they make you mad with some of their dog behaviours, they make you go out when you are depressed, they know everything about you and they are loyal for that even if you are a piece of shit, they are here through the worst and the happiest times, they are always here looking and waiting for you. They make you feel alive.
And when their time comes, your world is breaking so hard, you realize how much they gave to you without asking anything in return, you realize how pointless is your life and you only wish you died instead of them.
Dogs are way too good to us, so I think humanity doesn't deserve such kind souls and I think I didn't deserve my last dog either.
(it works with other animals too thinking about it...)