Hence most airlines policies that the bins are for roller bags and your under seat storage is your primary storage for personal items. Most of the people you talk about don't get free and clear foot wells while you are suffering, they have their personal items in their foot well, and their roller bag in the bin. It sounds like this take is that you think people should have to gate check, and get no foot well space, while you get all the foot well space at their expense. Why do people not understand the term "Sharing."

I usually only carry a brief case, and I put it in mu under seat primary storage. That is the airlines policy. It also allows for passengers who do have roller bags to put them in the overhead bins rather than gate checking. It’s just common courtesy to your fellow PAX. Where do people get this entitlement attitude that they should get whatever they want at the expense of others? I think that’s why the global economy is in ruins.