I ask this question because of this comment chain (and totally not because I got down voted and my ego is too fragile, it is most definitvely absolutely positevly me asking for the science. I swear)
https://lemmings.world/post/23635250/14708515
If you can go through it, please do, there are some references for some claims, if not you can go through the following ai generated summary (if it helps, it is a local llama)
The original poster (sga) expressed concerns about the practice of trimming cat nails, comparing it to declawing and suggesting that it may cause trauma for the cat. Other users (Bamboodpanda and Chairman Meow) responded that trimming cat nails is a normal and necessary practice, especially for indoor cats, to prevent overgrown nails and damage to furniture. sga argued that cat claws are an essential part of a cat’s predatory nature and that trimming them may impair their ability to hunt and defend themselves. Chairman Meow countered that cat nails are not as robust as sga suggested and that trimming them does not impair their usability. sga provided several sources suggesting that indoor cats often engage in predatory behavior outdoors, despite being fed at home. SupremeDonut responded that the sources sga provided referred to free-range and feral cats, rather than indoor house cats. sga provided additional sources to support the claim that indoor cats also engage in predatory behavior outdoors. sga also mentioned the hypothesis that some amount of injuries or exposure to allergens can be beneficial for children’s immune systems, and provided a source to support this claim.
It's fine, but not all cat's like it (cough) and most owners resort to force, so for many cats/owners it can be a regular traumatic experience anyway. Cats can be trained to deal with it nicely (small calm steps + treats afterwards), but one of my cats still covers her head in my arm pit while I trim her nails. She's scared shitless of the 'crunch'..