That's not justified (OK, I buy organic food, so I would claim not to be an idiot

). You can often buy organic veg where you couldn't get that type of veg as 'non-organic' food (and often get 'better' breeds of the veg or meat), and organic box schemes mean that in many areas you can get organic fruit and veg (delivered) for about the same price as less tasty 'normal' veg in a supermarket. 'Premium' food often also uses organic ingredients - for example, well-baked bread often uses organic flour (presumably, this is a pretty marginal cost if you're selling expensive bread...) I'm sure there's other sensible reasons to buy organic food too (e.g. ready meals can't contain transfats...)
None of these are reasons to buy organic food because it's organic - but there are plenty of other reasons why buying organic food might be a good idea. So far as I know, the extra risks from eating organic as opposed to 'conventional' food are minimal (and I'm not going to worry too much about eating cabbage damaging my health )