
People often claim that because veganism is a doctrine of “least harm”, vegans are hypocrites for paying for a great many insects to be killed to produce plant-sourced foods. While that is a salient criticism, it also reflects a core misunderstanding of vegan principles (you can read more here about what veganism is really trying to achieve). Veganism is not trying to prevent any and all harm to animals because veganism is not a doctrine of least or zero harm. Harming and even killing other animals is justified when it’s necessary, just as it is with people.
So, is it necessary to harm wild animals to protect crops? Well, within existing production methods, yes it is. Wild animals are killed on all agricultural lands to protect infrastructure, food crops and livestock feed. Of course, we can try to limit this damage and one excellent option is to adopt a vegan-friendly diet. On average, such a diet will lead to less overall harm to animals than a typical consumer’s diet.
Nonetheless, an awful lot of insects are killed to protect agricultural assets. On the face of it this is pretty bad, but how much does that really matter? I want to argue not as much as you might think. When it comes to using pesticides etc to kill insects, I think our concern is more broad-spectrum – we want to minimise the risk of species extinctions, keep the rest of the environment free of harmful fallouts and ensure produce that is safe for human consumption. In terms of the individual insects, I don’t think we have any kind of individual duty to protect them from cruelty when it’s necessary to protect our food supply.
I have two reasons for this claim.
First, most insects are what has been described as r-selected reproducers. They do not care that much about individuals – they work on a “weight of numbers” strategy. In other words, insects have many offspring and invest little care in those offspring. If enough are created, then most can die so long as enough survive to maintain the species. So, I suggest that our duty is to the species, not the individual.
Second, I contend insects are not sentient in a way that demands our moral duty to protect the individual. This seems like an intuitive acceptance of a truth we all recognise – most of us simply do not care that much about insects. If we did, we would not, for example, drive our cars nor poison ants as a matter of course. While it is possible that many insects can feel pain, very few people are willing to let that be the most important thing about them.
The reason we might worry about many animals is that their form of sentience entails an internal awareness of, and personal relationship with, themselves and other members of their species. They can have emotions, motivations, preferences, attachments and so on. Such rich inner lives means they matter in and of themselves and they matter enough that for them, justice matters.
Most insects, on the other hand, do not have such rich inner lives and largely operate on essential behavioural routines to achieve their goals. Take ants, for example. Ants recognise each other by chemical signals – they can tell which ants belong to their colony and what roles they play. But that’s as far as it goes – they don’t think of a fellow ant as Ralph from next door.
For an ant colony, what matters is if there are enough ants to fulfill the colony’s essential functions. It doesn’t matter if 100 of them are killed by a bicycle running over them; no-one misses them individually. There are thousands of others to maintain the colony.
In the end, we are not under the same moral duty to protect individual insects that we can be for more complex sentient animals. Killing insects when we must is a necessary and acceptable feature of modern production systems, just as we also accept, for example, killing cockroaches in kitchens, killing mosquitoes to prevent malaria, and killing termites to protect our homes. We even accept killing insects in huge numbers just by living our lives – travelling by aeroplane, driving our cars, walking on the street, etc.
Of course, it is still worthwhile to make choices that minimise harms to insects when we can! I’m not saying we shouldn’t care at all, just that when we have to kill insects to protect ourselves, our property and our food, we are not making an immoral choice.
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Don’t forget, no-one needs to be a vegan to adopt and apply vegan ethical principles in their daily lives to make a positive difference for other animals. If you’d like to know more, you can read my essay that offers a deeper dive into the meaning and application of vegan ethics at the link below:
Click here to access: Animals Matter – Veganism for Everyone (pdf, 466kb)







