I can understand that point of view from a U.S. citizen's (and allied West) point of view that you think US is really ideological. But as a non-US person, even when US pretended to be ideological, there is an underlying reality of maintaining hegemony, access to resources, etc.

When there was a large scale genocide in Bangladesh by Pakistan, US not only implicitly supported Pakistan, but also attempted to block/attack India (not clear the intentions, but Soviets got involved). There are many such cases.

For rest of the world to believe that US has only best intentions, they have to be really naive. In case Saddam, would US have the same enthusiasm for democracy if it was not for oil? US has toppled democratic governments when they were not aligned to its interest.

To put it in personal terms, would anyone trust someone with their money to person who only cheats 70% of times, while is honest 30% of times? The conclusion to be had is that those in incidents of honesty aligned with the interests of the person. Not because he or she was actually a good person.