Absolutely not. I hate hearing people say things like "humans are so horrible, earth would be better off without them."
First of all, people who say this, I think it is fair to say, are probably having some amount of self doubt. If you think that the earth would be better off without humanity, you are also thinking that the universe would be better off without you. I don't think so at all! You can have a positive impact on your fellow human beings, whoever you are.
I am going to refrain from bringing my personal theological beliefs into this discussion, and look at this from outside that. Humans are just another type of animal. The universe does not care what is done to it. It does not care if one of the animals controls more, builds more, populates more than the others.
We are unfortunately in a sad place right now where we are struggling with taking care of our environment. But more and more, I'm seeing a turning point, as more of the general public is caring about this, and we're actually coming out with technology that can help us solve these problems. Better sources of power are becoming more viable, and are decreasing in cost. It is much easier to get solar than it used to, and Tesla is rolling out solar roofing, which I think will become almost standard for building houses.
Then we have technology with carbon capture that will limit existing pollution and absorb existing CO2.
Further, we are learning more efficient ways to use what we already have. Batteries are helping to regulate power grids so that we can get rid of peaker plants. Electric motors and lightbulbs are becoming more efficient, vastly reducing the energy that we need.
I don't think that we will avoid all of the troubles with climate change - we're already experiencing many. But I don't think we're ever going to reach close to an apocalyptic scenario.
In the end, I think that this question is mostly reliant on the present success of humanity. In the late nineteenth century, the powers in the world believed that humanity was on an inevitable rise, that technology would only better humanity - of course, this was ignoring.... a lot. But this optimistic world view, that humanity could be better, led to us trying to be better. We thought we could achieve greater heights, and we sought to do so.
I think that having a pessimistic view of humanity and of yourself will only result in a self fulfilling prophecy. One should, of course, have balance in life. Recognize that problems exist, but believe that they can be solved or at least managed.
Also, when people say they think humanity is terrible, it comes across kind of as you saying to me and everyone else - I think you suck. That's a little bit of hyperbole, but that is the essence of it, even if it isn't so harsh. When it comes down to it, any meaning we find in the universe is found in our connection with other people. Of course the earth wouldn't care if we were snapped out of existence. But as intelligent beings, we care about each other. We do want to exist, we want to explore, learn, and enjoy each other's company.
Whether you have a secular or religious worldview, it is very hard to ignore the fact that most of the value of life is going to be gained from your interaction with others. Having this worldview, that humans will not improve, and we are nothing but a scourge to the universe, is not going to give you much enjoyment in life.
