For me it's not a question of principal, it's just an incovenience. Especially if your earplugs get pulled out and you have to refit them, or if it's winter and you have to spend time tucking your neck tube in round the bottom of your lid to keep the wind out. And if they ask you to remove your lid before fuelling (which is the only time it makes any sense, see my post above re the pointlessness of asking you to remove it before paying), then where do you put it down safely, given how filthy petrol stations are?

It's enough of a hassle that I'm quite happy to bear the minor inconvenience of continuing to another petrol station if asked to do it. Every time someone votes with their wallet in that way, it adds a little bit of pressure to prevent it becoming a universal practice.