I don't see a problem with that. To wit: "Opinion (or more usually and practically, decision) that's informed by or consistent with a recognizable framework or self-consistent set of guiding principles." You might claim to be a conscientious objector, but is that because that status would be advantageous for your plans at the moment (e.g. not being drafted), or is it actually consistent with other choices you've made?
There's something about how the world works that you don't like. Do you seek the power to change it, strive to adapt to it, or disregard it to focus on the things you do like? Different philosophies suggest different answers; yes those philosophies are opinions, and which one you choose is also an expression of your opinion, and you could just decide moment by moment without applying any of them in any consistent way or even being aware of them. But in the end you have to respond to the world somehow.