You nailed it - human nature is now lost cause, there is no going back, our world has gone to sh** basically. Good deeds still exist, but they are over shadowed by evil which is prominent and more evident.
Humans have evolved into selfish, greedy, evil, raging, mean creatures - I mean technology has taken over, now it is all about popularity, looks, lust, money, own interest and nothing more, in a world of HATE, whereas animals have remained true to themselves and have not gone the same route.
Mind you there are many stories too about dogs that turn against humans, chew them up, injure them, there is lots of that here unfortunately, but compared to human beings, they are generally more loving in all aspects.
Sadly, those good human beings left are usually isolated and unheard of, because they are left out, not being in the "norm" they are often the most sad people as they are rejected by society, therefore not in the spotlight. Should we blame the education system - YES - too much emphasis on teaching kids ridiculous topics most will probably never use anyway, wasting 2/3 of their life over learning nonsense, instead of being taught the true lessons of LIFE, EXPERIENCE and RESPECT for others, nope. Now you have teachers beating students, spitting on them, acting inappropriately, cussing at them, and basically exhibiting the same behaviours. That and coupled with horrible parenting, where kids witness their parents fight day and night, hit each other, cuss at each other, etc.
Those who have pets understand this more, how they are greeted and the affection they get when they arrive home, (I am not much of a pet person but I have witnessed the love and care from animals) - those who are into flowers and plants, they will always be there for you (with minimum care and love), up until the time they die ....... Humans are only "there" and care only as long as self interest is served....... TRUE love represents only a small minority of the human race unfortunately. And this whole corruption of human being is fueled by parenting, education system and large money interest corporations !!!
But it gets worse, even those kind, generous humans who help others before themselves, often get betrayed, let down and back stabbed in the end, despite that, they still keep on caring. It seems the nastiest of the human gene pool are getting it easy and successful in life whilst those who are the most deserving struggle the most and live a life of misery and despair.