I'm thinking of going into the greenhouse to poison the plants.
What makes you want to do that?
I hate those plants, they are so ugly and huge.
You dislike the plants you saw but poisoning them is unfair to the owner of the greenery. You can just leave them be, they are not hurting you in anyway. Plants have a way of curing us sometimes, you never know what they will have as far as an effect on you.
People are not important. I'll do whatever I want.
I'm concerned at your lack of care for other people or other living things. Other people do matter, even if you don't know them personally, and the plants also deserve to live undisturbed. If you don't like the way the plants look, you can just avoid looking at them.