As George Carlin said, we are a virus.

I've always said cancer. We just keep creating more than we need and try to live as long as possible. We're defective cells killing our host slowly.

I think that the society that has developed from the judeo-christian, god entitled mind set has become pretty close to the definition of parasitic vis-a-vis the planet. However, I think the planet will take care of the unsustainability of the situation in time, and the human race will have to actually get back to some semblance of balance if it is to actually survive.

yes we are. we've almost ran out of room and every natural resource.

Of course man is a parasite of earth. but then you have to perceive the world as a whole organism. However most perceptions are not that inclusive. E.g. I am a citizen of a state or province vs citizen of a country vs citizen of the world vs citizen of the milky way, etc. What level do you stop at?

we'll never really effect the planet itself but we certainly torture alot of animals, some bred in captivity and some sent to extinction

I think as a species we are better described as predators preying on most other species, the planet and ourselves.

Honestly, that fits many people but not all. I like to think I've made worthwhile contributions within a very small footprint.

Everything is a parasite.

There are two sides to me on this. I have such good and intelligent friends, and it gives me hope, but with this administration and the mentality of people, as well as the history of greed we humans have, I don't think the future is good. I'll keep doing positive things and I have a good life, but all I would need would be a positive love relationship.

every living thing's dependence relies on something else doesn't it?

Well, we humans are the most intelligent parasites to our planet.

Virus, cancer, parasite any and all of the above are true. Its interesting to look at a picture of the dark side of the earth. The populated areas resemble an infection.

Yes humans serve no purpose other than to consume, propagate, and destroy the environment, and any other species that they can make a profit from

Technically we are parasites until we're born. Then we're closer to disease.

I agree with every word you said!

I think that too

This definition seems vague and would apply to all apex predator, which we are.

It would seem that humans tick most of the boxes to qualify as parasites.

I totally agree that human's are parasites, but worse than most. An effective parasite does not destroy the host it depends on for the survival of it's species. We can and need to do better, much better.

yes we are take all give nothing back

Humans may or may not be parasite, depending on how we live our lives. Our dependence to the nature is a necessity. If we depend on it to the point that the environment is harmed, then we are. but the relationship may also be mutual if we do things that would benefit the environment in exchange. its a matter of choice so i guess, we cannot generalize and speak in behalf of everybody.