Yeah, you're right, but at least I am doing the best I can. It depends on the harvesting process, but I do see your point. In fact, before I became a vegan, or even went vegetarian, I used to ask this exact same question.
I guess once I learned a lot of things about the meat and dairy industry I just didn't want to eat meat, period.
However, I will not interfere with nature and the natural process of animals dying. I have found bugs in my fruit, I have pulled open celery ribs and seen a worm once, and there are probably insect eggs on produce too, especially the produce that grows closest to the ground or in it - carrots, potatoes, etc. We need these creatures in order to continue our ecosystem - our soil is rich because animals die and disintegrate into the soil and the nutrients in their body feed plants.
This is different than the unnatural process of piling thousands upon thousands of cows in tiny dirt pens and forcing them to eat corn, which their bodies cannot handle, and then slaughtering them by the millions. Once again this goes back to the way nature ought to be, the way ecosystems ought to function.
Our current relationship with the world is causing a slow but total destruction of all life... the way we mass-farm and produce animals is polluting our environment with sewage runoff and excess methane (yeah, animal farts for those who need sophmoric humor).
I refuse to sponsor the meat and dairy industries, period. Not only do they propogate an unnatural, inhumane approach to life, they endlessly manipulate the government in the USA; anyone who takes a look at the dairy and meat lobbyists influence on the writing of the USDA's Nutritional Guidelines for 1990, 1995, 2000 and 2005 (they come out every 5 years) will see a clear relationship between pressure from lobbyists and then a response in which the USDA suddenly changes their nutritional advice to the public... suddenly we need to drink more dairy, eat more meat... to me veganism is not just a way to keep from eating dead animals but it's a political statement as well.