Growing things are alive, that's how they grow.

If it makes you feel better, many plants want their seeds to be eaten so they can be spread. Tomatoes are just a package around the seeds, the green stems are the plants 'body'. It's more like eating semen than eating a person.

There’s a type of vegetarianism/veganism that only eats plants that “want” to be eaten. Specifically, many plants produce fruits that hold seeds. They make the fruits bright and tasty (which tbh usually means “sweet” but you get the point) so that animals will come along and eat them.

Plants have a problem. They can t walk. That means that any of their offspring are going to grow up right next to them, competing with them for resources. There’s a lot of different ways of dealing with this phenomenon, but one common way is for the plant to bribe an animal to move its seeds further away by wrapping it in something delicious. This is what happens with plants that depend on pollinators like bees - which give pollen to get more mobile organisms to move their genes over there somewhere) and with ones who produce seeded fruits and berries which will pass through an animal’s digestive tract relatively unscathed and wind up in a nutrient rich environment far from itself. There’s also wind-based pollination and different lifecycles and so on, but the point is that being eaten is the entire point of producing fruit - for the most part.

Anyway, that class of people are called “fructarians.” It’s not actually a super healthy diet for a human and I do not recommend it. They intentionally steer away from plants like carrots because you can’t eat a carrot without killing the carrot plant, while you can eat an apple without killing an apple tree, if that makes sense.

In any case, while I respect the motivation, I think it’s going over the top. While I’ll always try to support people’s choices in things like diets and morality, it really doesn’t hold up to scrutiny after a point. I’ve read about religions that encourage people to sweep the road ahead of them as they walk so as to not step on an insect, and who strain their water so as not to accidentally consume what they consider to be a tiny animal. The truth is that you’re messing things up left and right while sweeping in front of you, and anything that does actually get caught in your filter is almost certainly going to die almost instantly.

There was an embarrassingly long time when we thought that animals (and even human children) could not feel pain. This was obviously wrong. At the same time, I don’t think we need to project an existential terror as being felt by a carrot.

https://www.sciencealert.com/plants-can-hear-themselves-being-eaten-researchers-have-discovered

https://daily.jstor.org/plants-know-when-they-are-being-eaten-and-they-fight-back/

https://www.youtube.com/watch?v=hd-h_y1X4oA

Plants release VOCs which is basically their way of screaming. Once I learned about that I immediately looked up how to do photosynthesis.